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Fix ChaCha20 on 32-bit platforms (#99)

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* Fix ChaCha20 on 32-bit platforms

On 32-bit platforms with old compiler STORE64H() parameter is
not auto-expanded to 64-bit value, causing wrong IV data.
Spotted on BCM4706 MIPS32r2 with GCC 4.2.4:
	Exit before auth: Integrity error (bad packet size 2065808956)

* Fix Chacha20-Poly1305 and AES-GCM debug messages

Functions were renamed earlier and trace messages - not.
This commit is contained in:
Vladislav Grishenko 2020-05-29 18:26:22 +05:00 committed by GitHub
parent 4faf06aae7
commit b0243b0e7b
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 6 additions and 6 deletions
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8
chachapoly.c
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@ -82,7 +82,7 @@ static int dropbear_chachapoly_crypt(unsigned int seq,
return CRYPT_ERROR;
}
STORE64H(seq, seqbuf);
STORE64H((uint64_t)seq, seqbuf);
chacha_ivctr64(&state->chacha, seqbuf, sizeof(seqbuf), 0);
if ((err = chacha_keystream(&state->chacha, key, sizeof(key))) != CRYPT_OK) {
return err;
@ -122,13 +122,13 @@ static int dropbear_chachapoly_getlength(unsigned int seq,
unsigned char seqbuf[8], buf[4];
int err;
TRACE2(("enter dropbear_chachapoly_parse"))
TRACE2(("enter dropbear_chachapoly_getlength"))
if (len < sizeof(buf)) {
return CRYPT_ERROR;
}
STORE64H(seq, seqbuf);
STORE64H((uint64_t)seq, seqbuf);
chacha_ivctr64(&state->header, seqbuf, sizeof(seqbuf), 0);
if ((err = chacha_crypt(&state->header, in, sizeof(buf), buf)) != CRYPT_OK) {
return err;
@ -136,7 +136,7 @@ static int dropbear_chachapoly_getlength(unsigned int seq,
LOAD32H(*outlen, buf);
TRACE2(("leave dropbear_chachapoly_parse"))
TRACE2(("leave dropbear_chachapoly_getlength"))
return CRYPT_OK;
}

4
gcm.c
View File

@ -100,7 +100,7 @@ static int dropbear_gcm_crypt(unsigned int UNUSED(seq),
static int dropbear_gcm_getlength(unsigned int UNUSED(seq),
const unsigned char *in, unsigned int *outlen,
unsigned long len, dropbear_gcm_state* UNUSED(state)) {
TRACE2(("enter dropbear_gcm_parse"))
TRACE2(("enter dropbear_gcm_getlength"))
if (len < 4) {
return CRYPT_ERROR;
@ -108,7 +108,7 @@ static int dropbear_gcm_getlength(unsigned int UNUSED(seq),
LOAD32H(*outlen, in);
TRACE2(("leave dropbear_gcm_parse"))
TRACE2(("leave dropbear_gcm_getlength"))
return CRYPT_OK;
}