core/crypto/gost: Remove, exotic

vendor/botan/README.md

@@ -9,7 +9,6 @@ Wrappers for hashing algorithms have been added to match the API within the Odin
 | Algorithm                                                                                                    |                  |
 |:-------------------------------------------------------------------------------------------------------------|:-----------------|
 | [BLAKE2B](https://datatracker.ietf.org/doc/html/rfc7693)                                                     | ✔️ |
-| [GOST](https://datatracker.ietf.org/doc/html/rfc5831)                                                        | ✔️ |
 | [Keccak](https://nvlpubs.nist.gov/nistpubs/FIPS/NIST.FIPS.202.pdf)                                           | ✔️ |
 | [MD4](https://datatracker.ietf.org/doc/html/rfc1320)                                                         | ✔️ |
 | [MD5](https://datatracker.ietf.org/doc/html/rfc1321)                                                         | ✔️ |

vendor/botan/bindings/botan.odin

@@ -82,7 +82,6 @@ HASH_MD5            :: "MD5"
 HASH_TIGER_128      :: "Tiger(16,3)"
 HASH_TIGER_160      :: "Tiger(20,3)"
 HASH_TIGER_192      :: "Tiger(24,3)"
-HASH_GOST           :: "GOST-34.11"
 HASH_STREEBOG_256   :: "Streebog-256"
 HASH_STREEBOG_512   :: "Streebog-512"
 HASH_SM3            :: "SM3"

vendor/botan/gost/gost.odin

@@ -1,121 +0,0 @@
-package vendor_gost
-
-/*
-    Copyright 2021 zhibog
-    Made available under the BSD-3 license.
-
-    List of contributors:
-        zhibog:  Initial implementation.
-
-    Interface for the GOST hashing algorithm.
-    The hash will be computed via bindings to the Botan crypto library
-*/
-
-import "core:os"
-import "core:io"
-
-import botan "../bindings"
-
-/*
-    High level API
-*/
-
-DIGEST_SIZE :: 32
-
-// hash_string will hash the given input and return the
-// computed hash
-hash_string :: proc "contextless" (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 "contextless" (data: []byte) -> [DIGEST_SIZE]byte {
-    hash: [DIGEST_SIZE]byte
-    ctx: botan.hash_t
-    botan.hash_init(&ctx, botan.HASH_GOST, 0)
-    botan.hash_update(ctx, len(data) == 0 ? nil : &data[0], uint(len(data)))
-    botan.hash_final(ctx, &hash[0])
-    botan.hash_destroy(ctx)
-    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) {
-    assert(len(hash) >= DIGEST_SIZE, "Size of destination buffer is smaller than the digest size")
-    ctx: botan.hash_t
-    botan.hash_init(&ctx, botan.HASH_GOST, 0)
-    botan.hash_update(ctx, len(data) == 0 ? nil : &data[0], uint(len(data)))
-    botan.hash_final(ctx, &hash[0])
-    botan.hash_destroy(ctx)
-}
-
-// 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: botan.hash_t
-    botan.hash_init(&ctx, botan.HASH_GOST, 0)
-    buf := make([]byte, 512)
-    defer delete(buf)
-    i := 1
-    for i > 0 {
-        i, _ = io.read(s, buf)
-        if i > 0 {
-            botan.hash_update(ctx, len(buf) == 0 ? nil : &buf[0], uint(i))
-        } 
-    }
-    botan.hash_final(ctx, &hash[0])
-    botan.hash_destroy(ctx)
-    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
-*/
-
-Gost_Context :: botan.hash_t
-
-init :: proc "contextless" (ctx: ^botan.hash_t) {
-    botan.hash_init(ctx, botan.HASH_GOST, 0)
-}
-
-update :: proc "contextless" (ctx: ^botan.hash_t, data: []byte) {
-    botan.hash_update(ctx^, len(data) == 0 ? nil : &data[0], uint(len(data)))
-}
-
-final :: proc "contextless" (ctx: ^botan.hash_t, hash: []byte) {
-    botan.hash_final(ctx^, &hash[0])
-    botan.hash_destroy(ctx^)
-}