Mercurial > dropbear
view libtomcrypt/src/pk/dh/dh_export_key.c @ 1938:77bc00dcc19f default tip main master
Bump version to 2022.82
author | Matt Johnston <matt@ucc.asn.au> |
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date | Fri, 01 Apr 2022 14:43:27 +0800 |
parents | 6dba84798cd5 |
children |
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/* LibTomCrypt, modular cryptographic library -- Tom St Denis * * LibTomCrypt is a library that provides various cryptographic * algorithms in a highly modular and flexible manner. * * The library is free for all purposes without any express * guarantee it works. */ #include "tomcrypt.h" #ifdef LTC_MDH /** Binary export a DH key to a buffer @param out [out] The destination for the key @param outlen [in/out] The max size and resulting size of the DH key @param type Which type of key (PK_PRIVATE or PK_PUBLIC) @param key The key you wish to export @return CRYPT_OK if successful */ int dh_export_key(void *out, unsigned long *outlen, int type, dh_key *key) { unsigned long len; void *k; LTC_ARGCHK(out != NULL); LTC_ARGCHK(outlen != NULL); LTC_ARGCHK(key != NULL); k = (type == PK_PRIVATE) ? key->x : key->y; len = mp_unsigned_bin_size(k); if (*outlen < len) { *outlen = len; return CRYPT_BUFFER_OVERFLOW; } *outlen = len; return mp_to_unsigned_bin(k, out); } #endif /* LTC_MDH */ /* ref: $Format:%D$ */ /* git commit: $Format:%H$ */ /* commit time: $Format:%ai$ */