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core:crypto/hash: Add a generic higher level hash interface
There is a lot of code duplicated in convenience methods in each hash implementation, and having a generic hash type makes implementing higher-level constructs such as HMAC significantly easier down the road.
This commit is contained in:
Yawning Angel
@@ -7,371 +7,59 @@ package keccak
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List of contributors:
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zhibog, dotbmp: Initial implementation.
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Interface for the Keccak hashing algorithm.
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This is done because the padding in the SHA3 standard was changed by the NIST, resulting in a different output.
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Interface for the Keccak hashing algorithm. Most users will probably
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want SHA-3 and/or SHAKE instead, however the padding was changed during
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the standardization process by NIST, thus the legacy Keccak algorithm
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is provided.
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*/
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import "core:io"
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import "core:os"
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import "../../_sha3"
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/*
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High level API
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*/
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DIGEST_SIZE_224 :: 28
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DIGEST_SIZE_256 :: 32
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DIGEST_SIZE_384 :: 48
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DIGEST_SIZE_512 :: 64
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// hash_string_224 will hash the given input and return the
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// computed hash
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hash_string_224 :: proc(data: string) -> [DIGEST_SIZE_224]byte {
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return hash_bytes_224(transmute([]byte)(data))
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}
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Context :: distinct _sha3.Context
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// hash_bytes_224 will hash the given input and return the
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// computed hash
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hash_bytes_224 :: proc(data: []byte) -> [DIGEST_SIZE_224]byte {
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hash: [DIGEST_SIZE_224]byte
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ctx: Context
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init_224 :: proc(ctx: ^Context) {
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ctx.mdlen = DIGEST_SIZE_224
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ctx.is_keccak = true
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init(&ctx)
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update(&ctx, data)
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final(&ctx, hash[:])
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return hash
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_init(ctx)
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}
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// hash_string_to_buffer_224 will hash the given input and assign the
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// computed hash to the second parameter.
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// It requires that the destination buffer is at least as big as the digest size
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hash_string_to_buffer_224 :: proc(data: string, hash: []byte) {
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hash_bytes_to_buffer_224(transmute([]byte)(data), hash)
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}
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// hash_bytes_to_buffer_224 will hash the given input and write the
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// computed hash into the second parameter.
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// It requires that the destination buffer is at least as big as the digest size
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hash_bytes_to_buffer_224 :: proc(data, hash: []byte) {
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ctx: Context
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ctx.mdlen = DIGEST_SIZE_224
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ctx.is_keccak = true
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init(&ctx)
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update(&ctx, data)
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final(&ctx, hash)
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}
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// hash_stream_224 will read the stream in chunks and compute a
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// hash from its contents
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hash_stream_224 :: proc(s: io.Stream) -> ([DIGEST_SIZE_224]byte, bool) {
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hash: [DIGEST_SIZE_224]byte
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ctx: Context
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ctx.mdlen = DIGEST_SIZE_224
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ctx.is_keccak = true
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init(&ctx)
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buf := make([]byte, 512)
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defer delete(buf)
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read := 1
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for read > 0 {
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read, _ = io.read(s, buf)
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if read > 0 {
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update(&ctx, buf[:read])
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}
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}
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final(&ctx, hash[:])
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return hash, true
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}
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// hash_file_224 will read the file provided by the given handle
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// and compute a hash
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hash_file_224 :: proc(hd: os.Handle, load_at_once := false) -> ([DIGEST_SIZE_224]byte, bool) {
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if !load_at_once {
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return hash_stream_224(os.stream_from_handle(hd))
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} else {
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if buf, ok := os.read_entire_file(hd); ok {
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return hash_bytes_224(buf[:]), ok
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}
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}
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return [DIGEST_SIZE_224]byte{}, false
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}
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hash_224 :: proc {
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hash_stream_224,
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hash_file_224,
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hash_bytes_224,
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hash_string_224,
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hash_bytes_to_buffer_224,
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hash_string_to_buffer_224,
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}
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// hash_string_256 will hash the given input and return the
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// computed hash
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hash_string_256 :: proc(data: string) -> [DIGEST_SIZE_256]byte {
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return hash_bytes_256(transmute([]byte)(data))
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}
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// hash_bytes_256 will hash the given input and return the
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// computed hash
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hash_bytes_256 :: proc(data: []byte) -> [DIGEST_SIZE_256]byte {
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hash: [DIGEST_SIZE_256]byte
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ctx: Context
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init_256 :: proc(ctx: ^Context) {
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ctx.mdlen = DIGEST_SIZE_256
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ctx.is_keccak = true
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init(&ctx)
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update(&ctx, data)
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final(&ctx, hash[:])
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return hash
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_init(ctx)
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}
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// hash_string_to_buffer_256 will hash the given input and assign the
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// computed hash to the second parameter.
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// It requires that the destination buffer is at least as big as the digest size
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hash_string_to_buffer_256 :: proc(data: string, hash: []byte) {
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hash_bytes_to_buffer_256(transmute([]byte)(data), hash)
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}
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// hash_bytes_to_buffer_256 will hash the given input and write the
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// computed hash into the second parameter.
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// It requires that the destination buffer is at least as big as the digest size
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hash_bytes_to_buffer_256 :: proc(data, hash: []byte) {
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ctx: Context
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ctx.mdlen = DIGEST_SIZE_256
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ctx.is_keccak = true
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init(&ctx)
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update(&ctx, data)
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final(&ctx, hash)
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}
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// hash_stream_256 will read the stream in chunks and compute a
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// hash from its contents
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hash_stream_256 :: proc(s: io.Stream) -> ([DIGEST_SIZE_256]byte, bool) {
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hash: [DIGEST_SIZE_256]byte
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ctx: Context
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ctx.mdlen = DIGEST_SIZE_256
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ctx.is_keccak = true
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init(&ctx)
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buf := make([]byte, 512)
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defer delete(buf)
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read := 1
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for read > 0 {
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read, _ = io.read(s, buf)
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if read > 0 {
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update(&ctx, buf[:read])
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}
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}
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final(&ctx, hash[:])
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return hash, true
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}
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// hash_file_256 will read the file provided by the given handle
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// and compute a hash
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hash_file_256 :: proc(hd: os.Handle, load_at_once := false) -> ([DIGEST_SIZE_256]byte, bool) {
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if !load_at_once {
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return hash_stream_256(os.stream_from_handle(hd))
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} else {
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if buf, ok := os.read_entire_file(hd); ok {
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return hash_bytes_256(buf[:]), ok
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}
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}
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return [DIGEST_SIZE_256]byte{}, false
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}
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hash_256 :: proc {
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hash_stream_256,
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hash_file_256,
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hash_bytes_256,
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hash_string_256,
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hash_bytes_to_buffer_256,
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hash_string_to_buffer_256,
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}
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// hash_string_384 will hash the given input and return the
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// computed hash
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hash_string_384 :: proc(data: string) -> [DIGEST_SIZE_384]byte {
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return hash_bytes_384(transmute([]byte)(data))
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}
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// hash_bytes_384 will hash the given input and return the
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// computed hash
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hash_bytes_384 :: proc(data: []byte) -> [DIGEST_SIZE_384]byte {
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hash: [DIGEST_SIZE_384]byte
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ctx: Context
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init_384 :: proc(ctx: ^Context) {
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ctx.mdlen = DIGEST_SIZE_384
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ctx.is_keccak = true
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init(&ctx)
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update(&ctx, data)
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final(&ctx, hash[:])
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return hash
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_init(ctx)
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}
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// hash_string_to_buffer_384 will hash the given input and assign the
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// computed hash to the second parameter.
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// It requires that the destination buffer is at least as big as the digest size
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hash_string_to_buffer_384 :: proc(data: string, hash: []byte) {
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hash_bytes_to_buffer_384(transmute([]byte)(data), hash)
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}
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// hash_bytes_to_buffer_384 will hash the given input and write the
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// computed hash into the second parameter.
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// It requires that the destination buffer is at least as big as the digest size
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hash_bytes_to_buffer_384 :: proc(data, hash: []byte) {
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ctx: Context
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ctx.mdlen = DIGEST_SIZE_384
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ctx.is_keccak = true
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init(&ctx)
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update(&ctx, data)
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final(&ctx, hash)
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}
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// hash_stream_384 will read the stream in chunks and compute a
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// hash from its contents
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hash_stream_384 :: proc(s: io.Stream) -> ([DIGEST_SIZE_384]byte, bool) {
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hash: [DIGEST_SIZE_384]byte
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ctx: Context
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ctx.mdlen = DIGEST_SIZE_384
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ctx.is_keccak = true
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init(&ctx)
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buf := make([]byte, 512)
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defer delete(buf)
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read := 1
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for read > 0 {
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read, _ = io.read(s, buf)
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if read > 0 {
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update(&ctx, buf[:read])
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}
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}
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final(&ctx, hash[:])
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return hash, true
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}
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// hash_file_384 will read the file provided by the given handle
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// and compute a hash
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hash_file_384 :: proc(hd: os.Handle, load_at_once := false) -> ([DIGEST_SIZE_384]byte, bool) {
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if !load_at_once {
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return hash_stream_384(os.stream_from_handle(hd))
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} else {
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if buf, ok := os.read_entire_file(hd); ok {
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return hash_bytes_384(buf[:]), ok
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}
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}
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return [DIGEST_SIZE_384]byte{}, false
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}
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hash_384 :: proc {
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hash_stream_384,
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hash_file_384,
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hash_bytes_384,
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hash_string_384,
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hash_bytes_to_buffer_384,
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hash_string_to_buffer_384,
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}
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// hash_string_512 will hash the given input and return the
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// computed hash
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hash_string_512 :: proc(data: string) -> [DIGEST_SIZE_512]byte {
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return hash_bytes_512(transmute([]byte)(data))
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}
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// hash_bytes_512 will hash the given input and return the
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// computed hash
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hash_bytes_512 :: proc(data: []byte) -> [DIGEST_SIZE_512]byte {
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hash: [DIGEST_SIZE_512]byte
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ctx: Context
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init_512 :: proc(ctx: ^Context) {
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ctx.mdlen = DIGEST_SIZE_512
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_init(ctx)
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}
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@(private)
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_init :: proc(ctx: ^Context) {
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ctx.is_keccak = true
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init(&ctx)
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update(&ctx, data)
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final(&ctx, hash[:])
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return hash
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}
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// hash_string_to_buffer_512 will hash the given input and assign the
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// computed hash to the second parameter.
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// It requires that the destination buffer is at least as big as the digest size
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hash_string_to_buffer_512 :: proc(data: string, hash: []byte) {
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hash_bytes_to_buffer_512(transmute([]byte)(data), hash)
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}
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// hash_bytes_to_buffer_512 will hash the given input and write the
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// computed hash into the second parameter.
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// It requires that the destination buffer is at least as big as the digest size
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hash_bytes_to_buffer_512 :: proc(data, hash: []byte) {
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ctx: Context
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ctx.mdlen = DIGEST_SIZE_512
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ctx.is_keccak = true
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init(&ctx)
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update(&ctx, data)
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final(&ctx, hash)
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}
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// hash_stream_512 will read the stream in chunks and compute a
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// hash from its contents
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hash_stream_512 :: proc(s: io.Stream) -> ([DIGEST_SIZE_512]byte, bool) {
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hash: [DIGEST_SIZE_512]byte
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ctx: Context
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ctx.mdlen = DIGEST_SIZE_512
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ctx.is_keccak = true
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init(&ctx)
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buf := make([]byte, 512)
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defer delete(buf)
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read := 1
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for read > 0 {
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read, _ = io.read(s, buf)
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if read > 0 {
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update(&ctx, buf[:read])
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}
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}
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final(&ctx, hash[:])
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return hash, true
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}
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// hash_file_512 will read the file provided by the given handle
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// and compute a hash
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hash_file_512 :: proc(hd: os.Handle, load_at_once := false) -> ([DIGEST_SIZE_512]byte, bool) {
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if !load_at_once {
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return hash_stream_512(os.stream_from_handle(hd))
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} else {
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if buf, ok := os.read_entire_file(hd); ok {
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return hash_bytes_512(buf[:]), ok
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}
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}
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return [DIGEST_SIZE_512]byte{}, false
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}
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hash_512 :: proc {
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hash_stream_512,
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hash_file_512,
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hash_bytes_512,
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hash_string_512,
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hash_bytes_to_buffer_512,
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hash_string_to_buffer_512,
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}
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/*
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Low level API
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*/
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Context :: _sha3.Sha3_Context
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init :: proc(ctx: ^Context) {
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ctx.is_keccak = true
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_sha3.init(ctx)
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_sha3.init(transmute(^_sha3.Context)(ctx))
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}
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update :: proc(ctx: ^Context, data: []byte) {
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_sha3.update(ctx, data)
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_sha3.update(transmute(^_sha3.Context)(ctx), data)
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}
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final :: proc(ctx: ^Context, hash: []byte) {
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_sha3.final(ctx, hash)
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final :: proc(ctx: ^Context, hash: []byte, finalize_clone: bool = false) {
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_sha3.final(transmute(^_sha3.Context)(ctx), hash, finalize_clone)
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}
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clone :: proc(ctx, other: ^Context) {
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_sha3.clone(transmute(^_sha3.Context)(ctx), transmute(^_sha3.Context)(other))
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}
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reset :: proc(ctx: ^Context) {
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_sha3.reset(transmute(^_sha3.Context)(ctx))
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}
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@@ -11,98 +11,11 @@ package md5
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*/
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import "core:encoding/endian"
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import "core:io"
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import "core:math/bits"
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import "core:mem"
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import "core:os"
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/*
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High level API
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*/
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DIGEST_SIZE :: 16
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// hash_string will hash the given input and return the
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// computed hash
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hash_string :: proc(data: string) -> [DIGEST_SIZE]byte {
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return hash_bytes(transmute([]byte)(data))
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}
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// hash_bytes will hash the given input and return the
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// computed hash
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hash_bytes :: proc(data: []byte) -> [DIGEST_SIZE]byte {
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hash: [DIGEST_SIZE]byte
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ctx: Context
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init(&ctx)
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update(&ctx, data)
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final(&ctx, hash[:])
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return hash
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}
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// hash_string_to_buffer will hash the given input and assign the
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// computed hash to the second parameter.
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// It requires that the destination buffer is at least as big as the digest size
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hash_string_to_buffer :: proc(data: string, hash: []byte) {
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hash_bytes_to_buffer(transmute([]byte)(data), hash)
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}
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// hash_bytes_to_buffer will hash the given input and write the
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// computed hash into the second parameter.
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// It requires that the destination buffer is at least as big as the digest size
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hash_bytes_to_buffer :: proc(data, hash: []byte) {
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ctx: Context
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init(&ctx)
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update(&ctx, data)
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final(&ctx, hash)
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}
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// hash_stream will read the stream in chunks and compute a
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// hash from its contents
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hash_stream :: proc(s: io.Stream) -> ([DIGEST_SIZE]byte, bool) {
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hash: [DIGEST_SIZE]byte
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ctx: Context
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init(&ctx)
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buf := make([]byte, 512)
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defer delete(buf)
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read := 1
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for read > 0 {
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read, _ = io.read(s, buf)
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if read > 0 {
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update(&ctx, buf[:read])
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}
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}
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final(&ctx, hash[:])
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return hash, true
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}
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// hash_file will read the file provided by the given handle
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// and compute a hash
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hash_file :: proc(hd: os.Handle, load_at_once := false) -> ([DIGEST_SIZE]byte, bool) {
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if !load_at_once {
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return hash_stream(os.stream_from_handle(hd))
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} else {
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if buf, ok := os.read_entire_file(hd); ok {
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return hash_bytes(buf[:]), ok
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}
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}
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return [DIGEST_SIZE]byte{}, false
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}
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hash :: proc {
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hash_stream,
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hash_file,
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hash_bytes,
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hash_string,
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hash_bytes_to_buffer,
|
||||
hash_string_to_buffer,
|
||||
}
|
||||
|
||||
/*
|
||||
Low level API
|
||||
*/
|
||||
|
||||
init :: proc(ctx: ^Context) {
|
||||
ctx.state[0] = 0x67452301
|
||||
ctx.state[1] = 0xefcdab89
|
||||
@@ -129,13 +42,21 @@ update :: proc(ctx: ^Context, data: []byte) {
|
||||
}
|
||||
}
|
||||
|
||||
final :: proc(ctx: ^Context, hash: []byte) {
|
||||
final :: proc(ctx: ^Context, hash: []byte, finalize_clone: bool = false) {
|
||||
assert(ctx.is_initialized)
|
||||
|
||||
if len(hash) < DIGEST_SIZE {
|
||||
panic("crypto/md5: invalid destination digest size")
|
||||
}
|
||||
|
||||
ctx := ctx
|
||||
if finalize_clone {
|
||||
tmp_ctx: Context
|
||||
clone(&tmp_ctx, ctx)
|
||||
ctx = &tmp_ctx
|
||||
}
|
||||
defer(reset(ctx))
|
||||
|
||||
i := ctx.datalen
|
||||
|
||||
if ctx.datalen < 56 {
|
||||
@@ -163,8 +84,18 @@ final :: proc(ctx: ^Context, hash: []byte) {
|
||||
for i = 0; i < DIGEST_SIZE / 4; i += 1 {
|
||||
endian.unchecked_put_u32le(hash[i * 4:], ctx.state[i])
|
||||
}
|
||||
}
|
||||
|
||||
ctx.is_initialized = false
|
||||
clone :: proc(ctx, other: ^$T) {
|
||||
ctx^ = other^
|
||||
}
|
||||
|
||||
reset :: proc(ctx: ^$T) {
|
||||
if !ctx.is_initialized {
|
||||
return
|
||||
}
|
||||
|
||||
mem.zero_explicit(ctx, size_of(ctx^))
|
||||
}
|
||||
|
||||
/*
|
||||
|
||||
@@ -11,98 +11,11 @@ package sha1
|
||||
*/
|
||||
|
||||
import "core:encoding/endian"
|
||||
import "core:io"
|
||||
import "core:math/bits"
|
||||
import "core:mem"
|
||||
import "core:os"
|
||||
|
||||
/*
|
||||
High level API
|
||||
*/
|
||||
|
||||
DIGEST_SIZE :: 20
|
||||
|
||||
// hash_string will hash the given input and return the
|
||||
// computed hash
|
||||
hash_string :: proc(data: string) -> [DIGEST_SIZE]byte {
|
||||
return hash_bytes(transmute([]byte)(data))
|
||||
}
|
||||
|
||||
// hash_bytes will hash the given input and return the
|
||||
// computed hash
|
||||
hash_bytes :: proc(data: []byte) -> [DIGEST_SIZE]byte {
|
||||
hash: [DIGEST_SIZE]byte
|
||||
ctx: Context
|
||||
init(&ctx)
|
||||
update(&ctx, data)
|
||||
final(&ctx, hash[:])
|
||||
return hash
|
||||
}
|
||||
|
||||
// hash_string_to_buffer will hash the given input and assign the
|
||||
// computed hash to the second parameter.
|
||||
// It requires that the destination buffer is at least as big as the digest size
|
||||
hash_string_to_buffer :: proc(data: string, hash: []byte) {
|
||||
hash_bytes_to_buffer(transmute([]byte)(data), hash)
|
||||
}
|
||||
|
||||
// hash_bytes_to_buffer will hash the given input and write the
|
||||
// computed hash into the second parameter.
|
||||
// It requires that the destination buffer is at least as big as the digest size
|
||||
hash_bytes_to_buffer :: proc(data, hash: []byte) {
|
||||
ctx: Context
|
||||
init(&ctx)
|
||||
update(&ctx, data)
|
||||
final(&ctx, hash)
|
||||
}
|
||||
|
||||
// hash_stream will read the stream in chunks and compute a
|
||||
// hash from its contents
|
||||
hash_stream :: proc(s: io.Stream) -> ([DIGEST_SIZE]byte, bool) {
|
||||
hash: [DIGEST_SIZE]byte
|
||||
ctx: Context
|
||||
init(&ctx)
|
||||
|
||||
buf := make([]byte, 512)
|
||||
defer delete(buf)
|
||||
|
||||
read := 1
|
||||
for read > 0 {
|
||||
read, _ = io.read(s, buf)
|
||||
if read > 0 {
|
||||
update(&ctx, buf[:read])
|
||||
}
|
||||
}
|
||||
final(&ctx, hash[:])
|
||||
return hash, true
|
||||
}
|
||||
|
||||
// hash_file will read the file provided by the given handle
|
||||
// and compute a hash
|
||||
hash_file :: proc(hd: os.Handle, load_at_once := false) -> ([DIGEST_SIZE]byte, bool) {
|
||||
if !load_at_once {
|
||||
return hash_stream(os.stream_from_handle(hd))
|
||||
} else {
|
||||
if buf, ok := os.read_entire_file(hd); ok {
|
||||
return hash_bytes(buf[:]), ok
|
||||
}
|
||||
}
|
||||
return [DIGEST_SIZE]byte{}, false
|
||||
}
|
||||
|
||||
hash :: proc {
|
||||
hash_stream,
|
||||
hash_file,
|
||||
hash_bytes,
|
||||
hash_string,
|
||||
hash_bytes_to_buffer,
|
||||
hash_string_to_buffer,
|
||||
}
|
||||
|
||||
/*
|
||||
Low level API
|
||||
*/
|
||||
|
||||
init :: proc(ctx: ^Context) {
|
||||
ctx.state[0] = 0x67452301
|
||||
ctx.state[1] = 0xefcdab89
|
||||
@@ -134,13 +47,21 @@ update :: proc(ctx: ^Context, data: []byte) {
|
||||
}
|
||||
}
|
||||
|
||||
final :: proc(ctx: ^Context, hash: []byte) {
|
||||
final :: proc(ctx: ^Context, hash: []byte, finalize_clone: bool = false) {
|
||||
assert(ctx.is_initialized)
|
||||
|
||||
if len(hash) < DIGEST_SIZE {
|
||||
panic("crypto/sha1: invalid destination digest size")
|
||||
}
|
||||
|
||||
ctx := ctx
|
||||
if finalize_clone {
|
||||
tmp_ctx: Context
|
||||
clone(&tmp_ctx, ctx)
|
||||
ctx = &tmp_ctx
|
||||
}
|
||||
defer(reset(ctx))
|
||||
|
||||
i := ctx.datalen
|
||||
|
||||
if ctx.datalen < 56 {
|
||||
@@ -168,8 +89,18 @@ final :: proc(ctx: ^Context, hash: []byte) {
|
||||
for i = 0; i < DIGEST_SIZE / 4; i += 1 {
|
||||
endian.unchecked_put_u32be(hash[i * 4:], ctx.state[i])
|
||||
}
|
||||
}
|
||||
|
||||
ctx.is_initialized = false
|
||||
clone :: proc(ctx, other: ^$T) {
|
||||
ctx^ = other^
|
||||
}
|
||||
|
||||
reset :: proc(ctx: ^$T) {
|
||||
if !ctx.is_initialized {
|
||||
return
|
||||
}
|
||||
|
||||
mem.zero_explicit(ctx, size_of(ctx^))
|
||||
}
|
||||
|
||||
/*
|
||||
@@ -180,10 +111,10 @@ BLOCK_SIZE :: 64
|
||||
|
||||
Context :: struct {
|
||||
data: [BLOCK_SIZE]byte,
|
||||
datalen: u32,
|
||||
bitlen: u64,
|
||||
state: [5]u32,
|
||||
k: [4]u32,
|
||||
bitlen: u64,
|
||||
datalen: u32,
|
||||
|
||||
is_initialized: bool,
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user