36 lines
791 B
C
36 lines
791 B
C
/*
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hmac_sha256.h
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Originally written by https://github.com/h5p9sl
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*/
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#ifndef _HMAC_SHA256_H_
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#define _HMAC_SHA256_H_
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#ifdef __cplusplus
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extern "C" {
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#endif // __cplusplus
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#include <stddef.h>
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size_t // Returns the number of bytes written to `out`
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hmac_sha256(
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// [in]: The key and its length.
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// Should be at least 32 bytes long for optimal security.
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const void* key, const size_t keylen,
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// [in]: The data to hash alongside the key.
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const void* data, const size_t datalen,
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// [out]: The output hash.
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// Should be 32 bytes long. If it's less than 32 bytes,
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// the resulting hash will be truncated to the specified length.
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void* out, const size_t outlen
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);
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#ifdef __cplusplus
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}
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#endif // __cplusplus
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#endif // _HMAC_SHA256_H_
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