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Yawning Angel
00ab3beed9
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.
64 lines
1.3 KiB
Odin
64 lines
1.3 KiB
Odin
package sha3
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/*
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Copyright 2021 zhibog
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Made available under the BSD-3 license.
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List of contributors:
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zhibog, dotbmp: Initial implementation.
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Interface for the SHA3 hashing algorithm. The SHAKE functionality can
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be found in package shake. If you wish to compute a Keccak hash, you
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can use the legacy/keccak package, it will use the original padding.
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*/
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import "../_sha3"
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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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Context :: distinct _sha3.Context
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init_224 :: proc(ctx: ^Context) {
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ctx.mdlen = DIGEST_SIZE_224
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_init(ctx)
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}
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init_256 :: proc(ctx: ^Context) {
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ctx.mdlen = DIGEST_SIZE_256
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_init(ctx)
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}
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init_384 :: proc(ctx: ^Context) {
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ctx.mdlen = DIGEST_SIZE_384
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_init(ctx)
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}
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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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_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(transmute(^_sha3.Context)(ctx), data)
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}
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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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