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btrfs-progs: crypto: remove unused sha256 definitions
Remove: - sha1, sha384, sha512 related structures and helpers - HKDF definitions - USHA definitions Keep HMAC. Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
David Sterba
parent
94b60b67a9
commit
fb98c1e9fc
162
crypto/sha.h
162
crypto/sha.h
@ -102,45 +102,25 @@ enum {
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* hashing operations
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*/
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enum {
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SHA1_Message_Block_Size = 64, SHA224_Message_Block_Size = 64,
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SHA256_Message_Block_Size = 64, SHA384_Message_Block_Size = 128,
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SHA512_Message_Block_Size = 128,
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USHA_Max_Message_Block_Size = SHA512_Message_Block_Size,
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SHA224_Message_Block_Size = 64,
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SHA256_Message_Block_Size = 64,
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USHA_Max_Message_Block_Size = SHA256_Message_Block_Size,
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SHA1HashSize = 20, SHA224HashSize = 28, SHA256HashSize = 32,
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SHA384HashSize = 48, SHA512HashSize = 64,
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USHAMaxHashSize = SHA512HashSize,
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SHA224HashSize = 28, SHA256HashSize = 32,
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USHAMaxHashSize = SHA256HashSize,
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SHA1HashSizeBits = 160, SHA224HashSizeBits = 224,
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SHA256HashSizeBits = 256, SHA384HashSizeBits = 384,
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SHA512HashSizeBits = 512, USHAMaxHashSizeBits = SHA512HashSizeBits
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SHA224HashSizeBits = 224,
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SHA256HashSizeBits = 256,
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USHAMaxHashSizeBits = SHA256HashSizeBits
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};
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/*
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* These constants are used in the USHA (Unified SHA) functions.
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*/
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typedef enum SHAversion {
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SHA1, SHA224, SHA256, SHA384, SHA512
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SHA224, SHA256,
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} SHAversion;
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/*
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* This structure will hold context information for the SHA-1
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* hashing operation.
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*/
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typedef struct SHA1Context {
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uint32_t Intermediate_Hash[SHA1HashSize/4]; /* Message Digest */
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uint32_t Length_High; /* Message length in bits */
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uint32_t Length_Low; /* Message length in bits */
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int_least16_t Message_Block_Index; /* Message_Block array index */
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/* 512-bit message blocks */
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uint8_t Message_Block[SHA1_Message_Block_Size];
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int Computed; /* Is the hash computed? */
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int Corrupted; /* Cumulative corruption code */
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} SHA1Context;
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/*
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* This structure will hold context information for the SHA-256
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* hashing operation.
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@ -159,26 +139,6 @@ typedef struct SHA256Context {
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int Corrupted; /* Cumulative corruption code */
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} SHA256Context;
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/*
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* This structure will hold context information for the SHA-512
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* hashing operation.
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*/
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typedef struct SHA512Context {
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#ifdef USE_32BIT_ONLY
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uint32_t Intermediate_Hash[SHA512HashSize/4]; /* Message Digest */
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uint32_t Length[4]; /* Message length in bits */
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#else /* !USE_32BIT_ONLY */
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uint64_t Intermediate_Hash[SHA512HashSize/8]; /* Message Digest */
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uint64_t Length_High, Length_Low; /* Message length in bits */
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#endif /* USE_32BIT_ONLY */
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int_least16_t Message_Block_Index; /* Message_Block array index */
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/* 1024-bit message blocks */
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uint8_t Message_Block[SHA512_Message_Block_Size];
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int Computed; /* Is the hash computed?*/
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int Corrupted; /* Cumulative corruption code */
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} SHA512Context;
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/*
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* This structure will hold context information for the SHA-224
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@ -186,12 +146,6 @@ typedef struct SHA512Context {
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*/
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typedef struct SHA256Context SHA224Context;
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/*
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* This structure will hold context information for the SHA-384
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* hashing operation. It uses the SHA-512 structure for computation.
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*/
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typedef struct SHA512Context SHA384Context;
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/*
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* This structure holds context information for all SHA
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* hashing operations.
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@ -199,9 +153,7 @@ typedef struct SHA512Context SHA384Context;
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typedef struct USHAContext {
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int whichSha; /* which SHA is being used */
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union {
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SHA1Context sha1Context;
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SHA224Context sha224Context; SHA256Context sha256Context;
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SHA384Context sha384Context; SHA512Context sha512Context;
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} ctx;
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} USHAContext;
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@ -221,33 +173,10 @@ typedef struct HMACContext {
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} HMACContext;
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/*
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* This structure will hold context information for the HKDF
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* extract-and-expand Key Derivation Functions.
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*/
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typedef struct HKDFContext {
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int whichSha; /* which SHA is being used */
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HMACContext hmacContext;
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int hashSize; /* hash size of SHA being used */
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unsigned char prk[USHAMaxHashSize];
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/* pseudo-random key - output of hkdfInput */
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int Computed; /* Is the key material computed? */
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int Corrupted; /* Cumulative corruption code */
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} HKDFContext;
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/*
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* Function Prototypes
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*/
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/* SHA-1 */
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extern int SHA1Reset(SHA1Context *);
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extern int SHA1Input(SHA1Context *, const uint8_t *bytes,
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unsigned int bytecount);
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extern int SHA1FinalBits(SHA1Context *, uint8_t bits,
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unsigned int bit_count);
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extern int SHA1Result(SHA1Context *,
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uint8_t Message_Digest[SHA1HashSize]);
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/* SHA-224 */
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extern int SHA224Reset(SHA224Context *);
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extern int SHA224Input(SHA224Context *, const uint8_t *bytes,
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@ -266,49 +195,6 @@ extern int SHA256FinalBits(SHA256Context *, uint8_t bits,
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extern int SHA256Result(SHA256Context *,
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uint8_t Message_Digest[SHA256HashSize]);
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/* SHA-384 */
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extern int SHA384Reset(SHA384Context *);
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extern int SHA384Input(SHA384Context *, const uint8_t *bytes,
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unsigned int bytecount);
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extern int SHA384FinalBits(SHA384Context *, uint8_t bits,
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unsigned int bit_count);
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extern int SHA384Result(SHA384Context *,
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uint8_t Message_Digest[SHA384HashSize]);
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/* SHA-512 */
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extern int SHA512Reset(SHA512Context *);
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extern int SHA512Input(SHA512Context *, const uint8_t *bytes,
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unsigned int bytecount);
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extern int SHA512FinalBits(SHA512Context *, uint8_t bits,
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unsigned int bit_count);
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extern int SHA512Result(SHA512Context *,
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uint8_t Message_Digest[SHA512HashSize]);
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/* Unified SHA functions, chosen by whichSha */
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extern int USHAReset(USHAContext *context, SHAversion whichSha);
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extern int USHAInput(USHAContext *context,
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const uint8_t *bytes, unsigned int bytecount);
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extern int USHAFinalBits(USHAContext *context,
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uint8_t bits, unsigned int bit_count);
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extern int USHAResult(USHAContext *context,
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uint8_t Message_Digest[USHAMaxHashSize]);
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extern int USHABlockSize(enum SHAversion whichSha);
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extern int USHAHashSize(enum SHAversion whichSha);
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extern int USHAHashSizeBits(enum SHAversion whichSha);
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extern const char *USHAHashName(enum SHAversion whichSha);
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/*
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* HMAC Keyed-Hashing for Message Authentication, RFC 2104,
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* for all SHAs.
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* This interface allows a fixed-length text input to be used.
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*/
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extern int hmac(SHAversion whichSha, /* which SHA algorithm to use */
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const unsigned char *text, /* pointer to data stream */
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int text_len, /* length of data stream */
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const unsigned char *key, /* pointer to authentication key */
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int key_len, /* length of authentication key */
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uint8_t digest[USHAMaxHashSize]); /* caller digest to fill in */
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/*
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* HMAC Keyed-Hashing for Message Authentication, RFC 2104,
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* for all SHAs.
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@ -323,34 +209,4 @@ extern int hmacFinalBits(HMACContext *context, uint8_t bits,
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extern int hmacResult(HMACContext *context,
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uint8_t digest[USHAMaxHashSize]);
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/*
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* HKDF HMAC-based Extract-and-Expand Key Derivation Function,
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* RFC 5869, for all SHAs.
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*/
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extern int hkdf(SHAversion whichSha, const unsigned char *salt,
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int salt_len, const unsigned char *ikm, int ikm_len,
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const unsigned char *info, int info_len,
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uint8_t okm[ ], int okm_len);
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extern int hkdfExtract(SHAversion whichSha, const unsigned char *salt,
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int salt_len, const unsigned char *ikm,
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int ikm_len, uint8_t prk[USHAMaxHashSize]);
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extern int hkdfExpand(SHAversion whichSha, const uint8_t prk[ ],
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int prk_len, const unsigned char *info,
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int info_len, uint8_t okm[ ], int okm_len);
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/*
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* HKDF HMAC-based Extract-and-Expand Key Derivation Function,
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* RFC 5869, for all SHAs.
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* This interface allows any length of text input to be used.
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*/
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extern int hkdfReset(HKDFContext *context, enum SHAversion whichSha,
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const unsigned char *salt, int salt_len);
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extern int hkdfInput(HKDFContext *context, const unsigned char *ikm,
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int ikm_len);
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extern int hkdfFinalBits(HKDFContext *context, uint8_t ikm_bits,
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unsigned int ikm_bit_count);
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extern int hkdfResult(HKDFContext *context,
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uint8_t prk[USHAMaxHashSize],
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const unsigned char *info, int info_len,
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uint8_t okm[USHAMaxHashSize], int okm_len);
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#endif /* _SHA_H_ */
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