57 lines
1.5 KiB
C
57 lines
1.5 KiB
C
#include "mbedtls/sha256.h"
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/***
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* hash a string using SHA256
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* @param input the input string
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* @param input_length the length of the input string
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* @param output where to place the results, should be 32 bytes
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* @returns 1
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*/
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int libp2p_crypto_hashing_sha256(const unsigned char* input, size_t input_length, unsigned char* output) {
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mbedtls_sha256(input, input_length, output, 0);
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return 32;
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}
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/**
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* Initialize a sha256 hmac process
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* @param ctx the context
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* @returns true(1) on success, otherwise false(0)
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*/
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int libp2p_crypto_hashing_sha256_init(mbedtls_sha256_context* ctx) {
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mbedtls_sha256_init(ctx);
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return 1;
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}
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/**
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* Update a sha256 hmac process
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* @param ctx the context
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* @param input the data to add
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* @param input_size the size of input
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* @returns true(1) on success, otherwise false(0)
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*/
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int libp2p_crypto_hashing_sha256_update(mbedtls_sha256_context* ctx, const unsigned char* input, size_t input_size) {
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mbedtls_sha256_update(ctx, input, input_size);
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return 1;
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}
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/**
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* finalize a sha256 hmac process
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* @param ctx the context
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* @param hash where to put the results (for SHA256, should be 32 bytes long)
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* @returns true(1) on success, otherwise false(0)
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*/
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int libp2p_crypto_hashing_sha256_finish(mbedtls_sha256_context* ctx, unsigned char* hash) {
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mbedtls_sha256_finish(ctx, hash);
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return 1;
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}
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/**
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* Clean up allocated memory
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* @param ctx the context
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* @returns true(1) on success, otherwise false(0)
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*/
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int libp2p_crypto_hashing_sha256_free(mbedtls_sha256_context* ctx) {
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mbedtls_sha256_free(ctx);
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return 1;
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}
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