mirror of
https://github.com/henrydcase/pqc.git
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07db9c1e60
* Put AES ctx on the heap This forces people to use the ``ctx_release`` functions, because otherwise there will be leaks * Put fips202 on the heap * Add much more docs for fips202.h * fixup! Put fips202 on the heap * Put SHA2 on the heap-supporting API * Fix clang-tidy warnings * Fix unreachable free() in falcon * Fix McEliece8192128f-sse GNU Makefile
175 lines
3.9 KiB
C
175 lines
3.9 KiB
C
#ifndef SHA2_H
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#define SHA2_H
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#include <stddef.h>
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#include <stdint.h>
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/* The incremental API allows hashing of individual input blocks; these blocks
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must be exactly 64 bytes each.
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Use the 'finalize' functions for any remaining bytes (possibly over 64). */
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#define PQC_SHA256CTX_BYTES 40
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/* Structure for the incremental API */
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typedef struct {
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uint8_t *ctx;
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} sha224ctx;
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/* Structure for the incremental API */
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typedef struct {
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uint8_t *ctx;
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} sha256ctx;
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#define PQC_SHA512CTX_BYTES 72
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/* Structure for the incremental API */
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typedef struct {
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uint8_t *ctx;
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} sha384ctx;
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/* Structure for the incremental API */
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typedef struct {
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uint8_t *ctx;
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} sha512ctx;
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/* ====== SHA224 API ==== */
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/**
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* Initialize the incremental hashing API.
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*
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* Can't be called multiple times.
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*/
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void sha224_inc_init(sha224ctx *state);
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/**
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* Copy the hashing state
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*/
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void sha224_inc_ctx_clone(sha224ctx *stateout, const sha224ctx *statein);
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/**
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* Absorb blocks
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*/
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void sha224_inc_blocks(sha224ctx *state, const uint8_t *in, size_t inblocks);
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/**
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* Finalize and obtain the digest
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*
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* If applicable, this function will free the memory associated with the sha224ctx.
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*
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* If not calling this function, call `sha224_inc_ctx_release`
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*/
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void sha224_inc_finalize(uint8_t *out, sha224ctx *state, const uint8_t *in, size_t inlen);
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/**
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* Destroy the state. Make sure to use this, as this API may not always be stack-based.
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*/
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void sha224_inc_ctx_release(sha224ctx *state);
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/**
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* All-in-one sha224 function
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*/
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void sha224(uint8_t *out, const uint8_t *in, size_t inlen);
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/* ====== SHA256 API ==== */
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/**
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* Initialize the incremental hashing API
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*/
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void sha256_inc_init(sha256ctx *state);
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/**
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* Copy the hashing state
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*/
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void sha256_inc_ctx_clone(sha256ctx *stateout, const sha256ctx *statein);
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/**
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* Absorb blocks
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*/
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void sha256_inc_blocks(sha256ctx *state, const uint8_t *in, size_t inblocks);
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/**
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* Finalize and obtain the digest
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*
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* If applicable, this function will free the memory associated with the sha256ctx.
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*/
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void sha256_inc_finalize(uint8_t *out, sha256ctx *state, const uint8_t *in, size_t inlen);
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/**
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* Destroy the state. Make sure to use this, as this API may not always be stack-based.
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*/
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void sha256_inc_ctx_release(sha256ctx *state);
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/**
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* All-in-one sha256 function
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*/
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void sha256(uint8_t *out, const uint8_t *in, size_t inlen);
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/* ====== SHA384 API ==== */
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/**
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* Initialize the incremental hashing API
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*/
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void sha384_inc_init(sha384ctx *state);
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/**
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* Copy the hashing state
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*/
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void sha384_inc_ctx_clone(sha384ctx *stateout, const sha384ctx *statein);
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/**
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* Absorb blocks
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*/
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void sha384_inc_blocks(sha384ctx *state, const uint8_t *in, size_t inblocks);
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/**
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* Finalize and obtain the digest.
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*
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* If applicable, this function will free the memory associated with the sha384ctx.
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*/
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void sha384_inc_finalize(uint8_t *out, sha384ctx *state, const uint8_t *in, size_t inlen);
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/**
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* Destroy the state. Make sure to use this if not calling finalize, as this API may not always be stack-based.
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*/
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void sha384_inc_ctx_release(sha384ctx *state);
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/**
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* All-in-one sha384 function
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*/
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void sha384(uint8_t *out, const uint8_t *in, size_t inlen);
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/* ====== SHA512 API ==== */
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/**
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* Initialize the incremental hashing API
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*/
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void sha512_inc_init(sha512ctx *state);
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/**
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* Copy the hashing state
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*/
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void sha512_inc_ctx_clone(sha512ctx *stateout, const sha512ctx *statein);
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/**
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* Absorb blocks
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*/
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void sha512_inc_blocks(sha512ctx *state, const uint8_t *in, size_t inblocks);
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/**
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* Finalize and obtain the digest
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*
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* If applicable, this function will free the memory associated with the sha512ctx.
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*/
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void sha512_inc_finalize(uint8_t *out, sha512ctx *state, const uint8_t *in, size_t inlen);
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/**
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* Destroy the state. Make sure to use this if not calling finalize, as this API may not always be stack-based.
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*/
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void sha512_inc_ctx_release(sha512ctx *state);
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/**
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* All-in-one sha512 function
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*/
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void sha512(uint8_t *out, const uint8_t *in, size_t inlen);
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#endif
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