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Use mp_int_to_binary to encode bignums

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git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@19202 ec53bebd-3082-4978-b11e-865c3cabbd6b
This commit is contained in:
Love Hörnquist Åstrand
2006-12-02 08:59:59 +00:00
parent 89f9b6b049
commit 9dc51937ea
1 changed files with 18 additions and 16 deletions
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34
lib/des/rsa-imath.c
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@@ -123,9 +123,9 @@ imath_rsa_public_encrypt(int flen, const unsigned char* from,
mp_int_clear(&n);
{
size_t ssize;
ssize = mp_int_unsigned_len(&enc);
ssize = mp_int_binary_len(&enc);
assert(size >= ssize);
mp_int_to_unsigned(&enc, to, ssize);
mp_int_to_binary(&enc, to, ssize);
size = ssize;
}
mp_int_clear(&enc);
@@ -180,23 +180,23 @@ imath_rsa_public_decrypt(int flen, const unsigned char* from,
p = to;
size = mp_int_unsigned_len(&us);
size = mp_int_binary_len(&us);
assert(size <= RSA_size(rsa));
mp_int_to_unsigned(&us, p, size);
mp_int_to_binary(&us, p, size);
mp_int_clear(&us);
/* head zero was skipped by mp_int_to_unsigned */
if (*p == 0)
return -7;
if (*p != 1)
if (size == 0 || *p != 0)
return -6;
size--; p++;
if (size == 0 || *p != 1)
return -7;
size--; p++;
while (size && *p == 0xff) {
size--; p++;
}
if (size == 0 || *p != 0)
return -7;
return -8;
size--; p++;
memmove(to, p, size);
@@ -250,9 +250,10 @@ imath_rsa_private_encrypt(int flen, const unsigned char* from,
mp_int_clear(&us);
{
size_t ssize;
ssize = mp_int_unsigned_len(&s);
ssize = mp_int_binary_len(&s);
assert(size >= ssize);
mp_int_to_unsigned(&s, to, size);
mp_int_to_binary(&s, to, size);
size = ssize;
}
mp_int_clear(&s);
@@ -296,22 +297,23 @@ imath_rsa_private_decrypt(int flen, const unsigned char* from,
p = to;
{
size_t ssize;
ssize = mp_int_unsigned_len(&dec);
ssize = mp_int_binary_len(&dec);
assert(size >= ssize);
mp_int_to_unsigned(&dec, p, ssize);
mp_int_to_binary(&dec, p, ssize);
size = ssize;
}
mp_int_clear(&dec);
/* head zero was skipped by mp_int_to_unsigned */
if (*p != 2)
if (size == 0 || *p != 0)
return -3;
if (size == 0 || *p != 2)
return -4;
size--; p++;
while (size && *p != 0) {
size--; p++;
}
if (size == 0)
return -4;
return -5;
size--; p++;
memmove(to, p, size);