hasher: Add function to determine length of hashes
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@ -56,6 +56,44 @@ ENUM_NEXT(hash_algorithm_short_names, HASH_UNKNOWN, HASH_SHA3_512, HASH_IDENTITY
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"sha3_512");
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ENUM_END(hash_algorithm_short_names, HASH_SHA3_512);
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/*
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* Described in header
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*/
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size_t hasher_hash_size(hash_algorithm_t alg)
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{
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switch (alg)
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{
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case HASH_SHA1:
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return HASH_SIZE_SHA1;
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case HASH_SHA256:
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return HASH_SIZE_SHA256;
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case HASH_SHA384:
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return HASH_SIZE_SHA384;
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case HASH_SHA512:
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return HASH_SIZE_SHA512;
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case HASH_MD2:
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return HASH_SIZE_MD2;
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case HASH_MD4:
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return HASH_SIZE_MD4;
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case HASH_MD5:
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return HASH_SIZE_MD5;
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case HASH_SHA224:
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return HASH_SIZE_SHA224;
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case HASH_SHA3_224:
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return HASH_SIZE_SHA224;
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case HASH_SHA3_256:
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return HASH_SIZE_SHA256;
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case HASH_SHA3_384:
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return HASH_SIZE_SHA384;
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case HASH_SHA3_512:
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return HASH_SIZE_SHA512;
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case HASH_IDENTITY:
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case HASH_UNKNOWN:
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break;
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}
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return 0;
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}
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/*
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* Described in header.
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*/
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@ -130,6 +130,14 @@ struct hasher_t {
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void (*destroy)(hasher_t *this);
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};
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/**
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* Returns the size of the hash for the given algorithm.
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*
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* @param alg hash algorithm
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* @return size of hash or 0 if unknown
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*/
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size_t hasher_hash_size(hash_algorithm_t alg);
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/**
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* Conversion of ASN.1 OID to hash algorithm.
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*
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