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src/include/ipxe/sha1.h
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Michael Brown
[crypto] Generalise implementation of Merkle-Damgård hash algorithms
23 июн 2026, 15:24
23 июн 2026, 15:24
327378a
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#ifndef _IPXE_SHA1_H #define _IPXE_SHA1_H /** @file * * SHA-1 algorithm * */ FILE_LICENCE ( GPL2_OR_LATER ); FILE_SECBOOT ( PERMITTED ); #include <stdint.h> #include <ipxe/crypto.h> #include <ipxe/mdhash.h> /** An SHA-1 digest */ struct sha1_digest { /** Hash output */ uint32_t h[5]; }; /** An SHA-1 data block */ union sha1_block { /** Raw bytes */ uint8_t byte[64]; /** Raw dwords */ uint32_t dword[16]; /** Final block structure */ struct { /** Padding */ uint8_t pad[56]; /** Length in bits */ uint64_t len; } final; }; /** SHA-1 digest and data block * * The order of fields within this structure is designed to minimise * code size. */ struct sha1_digest_data { /** Digest of data already processed */ struct sha1_digest digest; /** Accumulated data */ union sha1_block data; } __attribute__ (( packed )); /** SHA-1 context size */ #define SHA1_CTX_SIZE MDHASH_CTX_SIZE ( struct sha1_digest_data ) /** SHA-1 block size */ #define SHA1_BLOCK_SIZE sizeof ( union sha1_block ) /** SHA-1 digest size */ #define SHA1_DIGEST_SIZE sizeof ( struct sha1_digest ) extern struct digest_algorithm sha1_algorithm; extern void prf_sha1 ( const void *key, size_t key_len, const char *label, const void *data, size_t data_len, void *prf, size_t prf_len ); extern void pbkdf2_sha1 ( const void *passphrase, size_t pass_len, const void *salt, size_t salt_len, int iterations, void *key, size_t key_len ); #endif /* _IPXE_SHA1_H */