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devtls: add support for aes_128_cbc and aes_256_cbc (import from sources)

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This commit is contained in:
cinap_lenrek 2012-12-04 10:53:53 +01:00
parent b296b96c68
commit 96cc3eb2ee
1 changed files with 30 additions and 0 deletions
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30
sys/src/9/port/devtls.c
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@ -234,6 +234,8 @@ static void rcvError(TlsRec *tr, int err, char *msg, ...);
static int rc4enc(Secret *sec, uchar *buf, int n);
static int des3enc(Secret *sec, uchar *buf, int n);
static int des3dec(Secret *sec, uchar *buf, int n);
static int aesenc(Secret *sec, uchar *buf, int n);
static int aesdec(Secret *sec, uchar *buf, int n);
static int noenc(Secret *sec, uchar *buf, int n);
static int sslunpad(uchar *buf, int n, int block);
static int tlsunpad(uchar *buf, int n, int block);
@ -1427,6 +1429,16 @@ initDES3key(Encalg *, Secret *s, uchar *p, uchar *iv)
setupDES3state(s->enckey, (uchar(*)[8])p, iv);
}
static void
initAESkey(Encalg *ea, Secret *s, uchar *p, uchar *iv)
{
s->enckey = smalloc(sizeof(AESstate));
s->enc = aesenc;
s->dec = aesdec;
s->block = 16;
setupAESstate(s->enckey, p, ea->keylen, iv);
}
static void
initclearenc(Encalg *, Secret *s, uchar *, uchar *)
{
@ -1440,6 +1452,8 @@ static Encalg encrypttab[] =
{ "clear", 0, 0, initclearenc },
{ "rc4_128", 128/8, 0, initRC4key },
{ "3des_ede_cbc", 3 * 8, 8, initDES3key },
{ "aes_128_cbc", 128/8, 16, initAESkey },
{ "aes_256_cbc", 256/8, 16, initAESkey },
{ 0 }
};
@ -2015,6 +2029,22 @@ des3dec(Secret *sec, uchar *buf, int n)
des3CBCdecrypt(buf, n, sec->enckey);
return (*sec->unpad)(buf, n, 8);
}
static int
aesenc(Secret *sec, uchar *buf, int n)
{
n = blockpad(buf, n, 16);
aesCBCencrypt(buf, n, sec->enckey);
return n;
}
static int
aesdec(Secret *sec, uchar *buf, int n)
{
aesCBCdecrypt(buf, n, sec->enckey);
return (*sec->unpad)(buf, n, 16);
}
static DigestState*
nomac(uchar *, ulong, uchar *, ulong, uchar *, DigestState *)
{