Mercurial > dropbear
view libtomcrypt/src/pk/dh/dh_export.c @ 1693:f9ad4d39e388
Bring back -Werror and improve travis tests
author | Matt Johnston <matt@ucc.asn.au> |
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date | Tue, 26 May 2020 23:53:50 +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 /** Export a DH key to a binary packet @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(unsigned char *out, unsigned long *outlen, int type, dh_key *key) { unsigned char flags[1]; int err; unsigned long version = 0; LTC_ARGCHK(out != NULL); LTC_ARGCHK(outlen != NULL); LTC_ARGCHK(key != NULL); if (type == PK_PRIVATE) { /* export x - private key */ flags[0] = 1; err = der_encode_sequence_multi(out, outlen, LTC_ASN1_SHORT_INTEGER, 1UL, &version, LTC_ASN1_BIT_STRING, 1UL, flags, LTC_ASN1_INTEGER, 1UL, key->prime, LTC_ASN1_INTEGER, 1UL, key->base, LTC_ASN1_INTEGER, 1UL, key->x, LTC_ASN1_EOL, 0UL, NULL); } else { /* export y - public key */ flags[0] = 0; err = der_encode_sequence_multi(out, outlen, LTC_ASN1_SHORT_INTEGER, 1UL, &version, LTC_ASN1_BIT_STRING, 1UL, flags, LTC_ASN1_INTEGER, 1UL, key->prime, LTC_ASN1_INTEGER, 1UL, key->base, LTC_ASN1_INTEGER, 1UL, key->y, LTC_ASN1_EOL, 0UL, NULL); } return err; } #endif /* LTC_MDH */ /* ref: $Format:%D$ */ /* git commit: $Format:%H$ */ /* commit time: $Format:%ai$ */