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Provide SHA-384 and SHA-512 as hashes usable in SSH KEX.

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SHA-384 was previously not implemented at all, but is a trivial
adjustment to SHA-512 (different starting constants, and truncate the
output hash). Both are now exposed as 'ssh_hash' structures so that
key exchange methods can ask for them.
This commit is contained in:
Chris Staite
2014-11-01 08:59:25 +00:00
committed by Simon Tatham
parent df0ac30d46
commit 66970c4258
2 changed files with 100 additions and 0 deletions
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7
ssh.h
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@ -204,10 +204,15 @@ typedef struct {
int blkused;
uint32 len[4];
} SHA512_State;
#define SHA384_State SHA512_State
void SHA512_Init(SHA512_State * s);
void SHA512_Bytes(SHA512_State * s, const void *p, int len);
void SHA512_Final(SHA512_State * s, unsigned char *output);
void SHA512_Simple(const void *p, int len, unsigned char *output);
void SHA384_Init(SHA384_State * s);
#define SHA384_Bytes(s, p, len) SHA512_Bytes(s, p, len)
void SHA384_Final(SHA384_State * s, unsigned char *output);
void SHA384_Simple(const void *p, int len, unsigned char *output);
struct ssh_cipher {
void *(*make_context)(void);
@ -334,6 +339,8 @@ extern const struct ssh2_ciphers ssh2_blowfish;
extern const struct ssh2_ciphers ssh2_arcfour;
extern const struct ssh_hash ssh_sha1;
extern const struct ssh_hash ssh_sha256;
extern const struct ssh_hash ssh_sha384;
extern const struct ssh_hash ssh_sha512;
extern const struct ssh_kexes ssh_diffiehellman_group1;
extern const struct ssh_kexes ssh_diffiehellman_group14;
extern const struct ssh_kexes ssh_diffiehellman_gex;