mirror of
https://github.com/Ed94/Odin.git
synced 2026-08-04 22:58:46 +00:00
Removed context switching system from the crypto library to simplify the code
This commit is contained in:
zhibog
+73
-186
@@ -6,7 +6,6 @@ package shake
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List of contributors:
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zhibog, dotbmp: Initial implementation.
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Jeroen van Rijn: Context design to be able to change from Odin implementation to bindings.
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Interface for the SHAKE hashing algorithm.
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The SHA3 functionality can be found in package sha3.
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@@ -15,52 +14,8 @@ package shake
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import "core:os"
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import "core:io"
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import "../botan"
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import "../_ctx"
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import "../_sha3"
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/*
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Context initialization and switching between the Odin implementation and the bindings
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*/
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USE_BOTAN_LIB :: bool(#config(USE_BOTAN_LIB, false))
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@(private)
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_init_vtable :: #force_inline proc() -> ^_ctx.Hash_Context {
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ctx := _ctx._init_vtable()
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when USE_BOTAN_LIB {
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use_botan()
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} else {
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_assign_hash_vtable(ctx)
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}
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return ctx
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}
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@(private)
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_assign_hash_vtable :: #force_inline proc(ctx: ^_ctx.Hash_Context) {
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ctx.hash_bytes_16 = hash_bytes_odin_16
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ctx.hash_file_16 = hash_file_odin_16
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ctx.hash_stream_16 = hash_stream_odin_16
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ctx.hash_bytes_32 = hash_bytes_odin_32
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ctx.hash_file_32 = hash_file_odin_32
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ctx.hash_stream_32 = hash_stream_odin_32
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ctx.init = _init_odin
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ctx.update = _update_odin
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ctx.final = _final_odin
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}
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_hash_impl := _init_vtable()
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// use_botan assigns the internal vtable of the hash context to use the Botan bindings
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use_botan :: #force_inline proc() {
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botan.assign_hash_vtable(_hash_impl, botan.HASH_SHAKE)
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}
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// use_odin assigns the internal vtable of the hash context to use the Odin implementation
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use_odin :: #force_inline proc() {
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_assign_hash_vtable(_hash_impl)
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}
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/*
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High level API
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*/
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@@ -74,22 +29,48 @@ hash_string_128 :: proc(data: string) -> [16]byte {
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// hash_bytes_128 will hash the given input and return the
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// computed hash
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hash_bytes_128 :: proc(data: []byte) -> [16]byte {
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_create_shake_ctx(16)
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return _hash_impl->hash_bytes_16(data)
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hash: [16]byte
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ctx: _sha3.Sha3_Context
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ctx.mdlen = 16
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_sha3.init(&ctx)
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_sha3.update(&ctx, data)
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_sha3.shake_xof(&ctx)
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_sha3.shake_out(&ctx, hash[:])
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return hash
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}
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// hash_stream_128 will read the stream in chunks and compute a
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// hash from its contents
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hash_stream_128 :: proc(s: io.Stream) -> ([16]byte, bool) {
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_create_shake_ctx(16)
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return _hash_impl->hash_stream_16(s)
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hash: [16]byte
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ctx: _sha3.Sha3_Context
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ctx.mdlen = 16
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_sha3.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, _ = s->impl_read(buf)
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if read > 0 {
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_sha3.update(&ctx, buf[:read])
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}
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}
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_sha3.shake_xof(&ctx)
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_sha3.shake_out(&ctx, hash[:])
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return hash, true
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}
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// hash_file_128 will read the file provided by the given handle
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// and compute a hash
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hash_file_128 :: proc(hd: os.Handle, load_at_once := false) -> ([16]byte, bool) {
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_create_shake_ctx(16)
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return _hash_impl->hash_file_16(hd, load_at_once)
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if !load_at_once {
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return hash_stream_128(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_128(buf[:]), ok
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}
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}
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return [16]byte{}, false
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}
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hash_128 :: proc {
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@@ -108,22 +89,48 @@ hash_string_256 :: proc(data: string) -> [32]byte {
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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) -> [32]byte {
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_create_shake_ctx(32)
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return _hash_impl->hash_bytes_32(data)
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hash: [32]byte
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ctx: _sha3.Sha3_Context
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ctx.mdlen = 32
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_sha3.init(&ctx)
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_sha3.update(&ctx, data)
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_sha3.shake_xof(&ctx)
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_sha3.shake_out(&ctx, hash[:])
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return 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) -> ([32]byte, bool) {
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_create_shake_ctx(32)
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return _hash_impl->hash_stream_32(s)
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hash: [32]byte
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ctx: _sha3.Sha3_Context
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ctx.mdlen = 32
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_sha3.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, _ = s->impl_read(buf)
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if read > 0 {
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_sha3.update(&ctx, buf[:read])
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}
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}
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_sha3.shake_xof(&ctx)
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_sha3.shake_out(&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) -> ([32]byte, bool) {
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_create_shake_ctx(32)
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return _hash_impl->hash_file_32(hd, load_at_once)
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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 [32]byte{}, false
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}
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hash_256 :: proc {
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@@ -137,137 +144,17 @@ hash_256 :: proc {
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Low level API
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*/
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init :: proc(ctx: ^_ctx.Hash_Context) {
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_hash_impl->init()
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Sha3_Context :: _sha3.Sha3_Context
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init :: proc(ctx: ^_sha3.Sha3_Context) {
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_sha3.init(ctx)
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}
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update :: proc(ctx: ^_ctx.Hash_Context, data: []byte) {
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_hash_impl->update(data)
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update :: proc "contextless" (ctx: ^_sha3.Sha3_Context, data: []byte) {
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_sha3.update(ctx, data)
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}
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final :: proc(ctx: ^_ctx.Hash_Context, hash: []byte) {
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_hash_impl->final(hash)
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}
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hash_bytes_odin_16 :: #force_inline proc(ctx: ^_ctx.Hash_Context, data: []byte) -> [16]byte {
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hash: [16]byte
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if c, ok := ctx.internal_ctx.(_sha3.Sha3_Context); ok {
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_sha3.init_odin(&c)
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_sha3.update_odin(&c, data)
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_sha3.shake_xof_odin(&c)
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_sha3.shake_out_odin(&c, hash[:])
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}
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return hash
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}
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hash_stream_odin_16 :: #force_inline proc(ctx: ^_ctx.Hash_Context, fs: io.Stream) -> ([16]byte, bool) {
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hash: [16]byte
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if c, ok := ctx.internal_ctx.(_sha3.Sha3_Context); ok {
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_sha3.init_odin(&c)
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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, _ = fs->impl_read(buf)
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if read > 0 {
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_sha3.update_odin(&c, buf[:read])
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}
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}
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_sha3.shake_xof_odin(&c)
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_sha3.shake_out_odin(&c, hash[:])
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return hash, true
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} else {
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return hash, false
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}
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}
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hash_file_odin_16 :: #force_inline proc(ctx: ^_ctx.Hash_Context, hd: os.Handle, load_at_once := false) -> ([16]byte, bool) {
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if !load_at_once {
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return hash_stream_odin_16(ctx, 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_odin_16(ctx, buf[:]), ok
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}
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}
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return [16]byte{}, false
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}
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hash_bytes_odin_32 :: #force_inline proc(ctx: ^_ctx.Hash_Context, data: []byte) -> [32]byte {
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hash: [32]byte
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if c, ok := ctx.internal_ctx.(_sha3.Sha3_Context); ok {
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_sha3.init_odin(&c)
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_sha3.update_odin(&c, data)
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_sha3.shake_xof_odin(&c)
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_sha3.shake_out_odin(&c, hash[:])
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}
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return hash
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}
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hash_stream_odin_32 :: #force_inline proc(ctx: ^_ctx.Hash_Context, fs: io.Stream) -> ([32]byte, bool) {
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hash: [32]byte
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if c, ok := ctx.internal_ctx.(_sha3.Sha3_Context); ok {
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_sha3.init_odin(&c)
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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, _ = fs->impl_read(buf)
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if read > 0 {
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_sha3.update_odin(&c, buf[:read])
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}
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}
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_sha3.shake_xof_odin(&c)
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_sha3.shake_out_odin(&c, hash[:])
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return hash, true
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} else {
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return hash, false
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}
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}
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hash_file_odin_32 :: #force_inline proc(ctx: ^_ctx.Hash_Context, hd: os.Handle, load_at_once := false) -> ([32]byte, bool) {
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if !load_at_once {
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return hash_stream_odin_32(ctx, 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_odin_32(ctx, buf[:]), ok
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}
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}
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return [32]byte{}, false
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}
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@(private)
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_create_shake_ctx :: #force_inline proc(mdlen: int) {
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ctx: _sha3.Sha3_Context
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ctx.mdlen = mdlen
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_hash_impl.internal_ctx = ctx
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switch mdlen {
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case 16: _hash_impl.hash_size = ._16
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case 32: _hash_impl.hash_size = ._32
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}
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}
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@(private)
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_init_odin :: #force_inline proc(ctx: ^_ctx.Hash_Context) {
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#partial switch ctx.hash_size {
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case ._16: _create_shake_ctx(16)
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case ._32: _create_shake_ctx(32)
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}
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if c, ok := ctx.internal_ctx.(_sha3.Sha3_Context); ok {
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_sha3.init_odin(&c)
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}
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}
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@(private)
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_update_odin :: #force_inline proc(ctx: ^_ctx.Hash_Context, data: []byte) {
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if c, ok := ctx.internal_ctx.(_sha3.Sha3_Context); ok {
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_sha3.update_odin(&c, data)
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}
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}
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@(private)
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_final_odin :: #force_inline proc(ctx: ^_ctx.Hash_Context, hash: []byte) {
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if c, ok := ctx.internal_ctx.(_sha3.Sha3_Context); ok {
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_sha3.shake_xof_odin(&c)
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_sha3.shake_out_odin(&c, hash[:])
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}
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final :: proc "contextless" (ctx: ^_sha3.Sha3_Context, hash: []byte) {
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_sha3.shake_xof(ctx)
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_sha3.shake_out(ctx, hash[:])
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}
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