62 lines
1.7 KiB
C
62 lines
1.7 KiB
C
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/**
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* An implementation of the multihash protocol in C
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*/
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#ifndef __LIBP2P_MULTIHASH_H
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#define __LIBP2P_MULTIHASH_H
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#define MULTIHASH_SHA1 0x11
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#define MULTIHASH_SHA2_256 0x12
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#define MULTIHASH_SHA2_512 0x13
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#define MULTIHASH_SHA3_512 0x14
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#define MULTIHASH_SHA3_384 0x15
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#define MULTIHASH_SHA3_256 0x16
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#define MULTIHASH_SHA3_224 0x17
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#define MULTIHASH_SHAKE_128 0x18
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#define MULTIHASH_SHAKE_256 0x19
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#define MULTIHASH_BLAKE2B 0x20
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#define MULTIHASH_BLAKE2S 0x21
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struct MultiHash {
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char fn_code;
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char size;
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unsigned char* data;
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};
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char* libp2p_multihash_get_fn_name(char fn_code);
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/**
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* encodes the multihash into a hex string
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*/
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int libp2p_multihash_hex_string(struct MultiHash* hash, char* string, int max_length);
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/**
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* decodes a hex string into a multihash
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*/
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int libp2p_multihash_from_hex_string(char* string, int length, struct MultiHash* hash);
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/**
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* turns a multihash into a b58 string
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* @param hash the Multihash to encode
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* @param binary_buffer the buffer to fill
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* @param max_length the size of the buffer
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* @returns true(1) on success
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*/
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int libp2p_multihash_to_b58(struct MultiHash* hash, unsigned char* binary_buffer, size_t max_length);
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/**
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* turns a base58 encoded string into a MultiHash
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* @param b58_string the base58 encoded string
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* @param b58_string_length the length of the encoded string
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* @param hash the MultiHash to fill
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* @returns true(1) on success
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*/
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int libp2p_b58_to_multihash(unsigned char* b58_string, size_t b58_string_length, struct MultiHash* hash);
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/**
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* retrieve the size required for the multihash that is embedded in the base58 encoded string
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*/
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size_t libp2p_multihash_b58_size(unsigned char* b58_string);
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#endif /* multihash_h */
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