diff options
Diffstat (limited to 'src/libcryptobox/keypair.c')
| -rw-r--r-- | src/libcryptobox/keypair.c | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/src/libcryptobox/keypair.c b/src/libcryptobox/keypair.c index 21b497130..c8fa5633a 100644 --- a/src/libcryptobox/keypair.c +++ b/src/libcryptobox/keypair.c @@ -978,6 +978,7 @@ rspamd_keypair_decrypt (struct rspamd_cryptobox_keypair *kp, return TRUE; } + gboolean rspamd_keypair_encrypt (struct rspamd_cryptobox_keypair *kp, const guchar *in, gsize inlen, @@ -1026,4 +1027,53 @@ rspamd_keypair_encrypt (struct rspamd_cryptobox_keypair *kp, } return TRUE; +} + +gboolean +rspamd_pubkey_encrypt (struct rspamd_cryptobox_pubkey *pk, + const guchar *in, gsize inlen, + guchar **out, gsize *outlen, + GError **err) +{ + guchar *nonce, *mac, *data, *pubkey; + struct rspamd_cryptobox_keypair *local; + gsize olen; + + g_assert (pk != NULL); + g_assert (in != NULL); + + if (pk->type != RSPAMD_KEYPAIR_KEX) { + g_set_error (err, rspamd_keypair_quark (), EINVAL, + "invalid pubkey type"); + + return FALSE; + } + + local = rspamd_keypair_new (pk->type, pk->alg); + + olen = inlen + sizeof (encrypted_magic) + + rspamd_cryptobox_pk_bytes (pk->alg) + + rspamd_cryptobox_mac_bytes (pk->alg) + + rspamd_cryptobox_nonce_bytes (pk->alg); + *out = g_malloc (olen); + memcpy (*out, encrypted_magic, sizeof (encrypted_magic)); + pubkey = *out + sizeof (encrypted_magic); + mac = pubkey + rspamd_cryptobox_pk_bytes (pk->alg); + nonce = mac + rspamd_cryptobox_mac_bytes (pk->alg); + data = nonce + rspamd_cryptobox_nonce_bytes (pk->alg); + + ottery_rand_bytes (nonce, rspamd_cryptobox_nonce_bytes (pk->alg)); + memcpy (data, in, inlen); + memcpy (pubkey, rspamd_pubkey_get_pk (pk, NULL), + rspamd_cryptobox_pk_bytes (pk->alg)); + rspamd_cryptobox_encrypt_inplace (data, inlen, nonce, pubkey, + rspamd_keypair_component (local, RSPAMD_KEYPAIR_COMPONENT_SK, NULL), + mac, pk->alg); + rspamd_keypair_unref (local); + + if (outlen) { + *outlen = olen; + } + + return TRUE; }
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