diff options
Diffstat (limited to 'libtomcrypt/src/pk/asn1/der/integer')
3 files changed, 47 insertions, 44 deletions
diff --git a/libtomcrypt/src/pk/asn1/der/integer/der_decode_integer.c b/libtomcrypt/src/pk/asn1/der/integer/der_decode_integer.c index e68b2c9..aef87a3 100644 --- a/libtomcrypt/src/pk/asn1/der/integer/der_decode_integer.c +++ b/libtomcrypt/src/pk/asn1/der/integer/der_decode_integer.c @@ -6,7 +6,7 @@ * The library is free for all purposes without any express * guarantee it works. * - * Tom St Denis, tomstdenis@gmail.com, http://libtomcrypt.org + * Tom St Denis, tomstdenis@gmail.com, http://libtomcrypt.com */ #include "tomcrypt.h" @@ -25,7 +25,7 @@ @param num The first mp_int to decode @return CRYPT_OK if successful */ -int der_decode_integer(const unsigned char *in, unsigned long inlen, mp_int *num) +int der_decode_integer(const unsigned char *in, unsigned long inlen, void *num) { unsigned long x, y, z; int err; @@ -56,7 +56,7 @@ int der_decode_integer(const unsigned char *in, unsigned long inlen, mp_int *num } /* no so read it */ - if ((err = mpi_to_ltc_error(mp_read_unsigned_bin(num, (unsigned char *)in + x, z))) != CRYPT_OK) { + if ((err = mp_read_unsigned_bin(num, (unsigned char *)in + x, z)) != CRYPT_OK) { return err; } } else { @@ -80,23 +80,23 @@ int der_decode_integer(const unsigned char *in, unsigned long inlen, mp_int *num } /* no so read it */ - if ((err = mpi_to_ltc_error(mp_read_unsigned_bin(num, (unsigned char *)in + x, y))) != CRYPT_OK) { + if ((err = mp_read_unsigned_bin(num, (unsigned char *)in + x, y)) != CRYPT_OK) { return err; } } /* see if it's negative */ if (in[x] & 0x80) { - mp_int tmp; - if (mp_init(&tmp) != MP_OKAY) { + void *tmp; + if (mp_init(&tmp) != CRYPT_OK) { return CRYPT_MEM; } - if (mp_2expt(&tmp, mp_count_bits(num)) != MP_OKAY || mp_sub(num, &tmp, num) != MP_OKAY) { - mp_clear(&tmp); + if (mp_2expt(tmp, mp_count_bits(num)) != CRYPT_OK || mp_sub(num, tmp, num) != CRYPT_OK) { + mp_clear(tmp); return CRYPT_MEM; } - mp_clear(&tmp); + mp_clear(tmp); } return CRYPT_OK; @@ -106,5 +106,5 @@ int der_decode_integer(const unsigned char *in, unsigned long inlen, mp_int *num #endif /* $Source: /cvs/libtom/libtomcrypt/src/pk/asn1/der/integer/der_decode_integer.c,v $ */ -/* $Revision: 1.2 $ */ -/* $Date: 2005/06/01 00:06:05 $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/03/31 14:15:35 $ */ diff --git a/libtomcrypt/src/pk/asn1/der/integer/der_encode_integer.c b/libtomcrypt/src/pk/asn1/der/integer/der_encode_integer.c index f0f41be..ff4fce6 100644 --- a/libtomcrypt/src/pk/asn1/der/integer/der_encode_integer.c +++ b/libtomcrypt/src/pk/asn1/der/integer/der_encode_integer.c @@ -6,7 +6,7 @@ * The library is free for all purposes without any express * guarantee it works. * - * Tom St Denis, tomstdenis@gmail.com, http://libtomcrypt.org + * Tom St Denis, tomstdenis@gmail.com, http://libtomcrypt.com */ #include "tomcrypt.h" @@ -26,7 +26,7 @@ @param outlen [in/out] The max size and resulting size of the DER encoded integers @return CRYPT_OK if successful */ -int der_encode_integer(mp_int *num, unsigned char *out, unsigned long *outlen) +int der_encode_integer(void *num, unsigned char *out, unsigned long *outlen) { unsigned long tmplen, y; int err, leading_zero; @@ -41,12 +41,13 @@ int der_encode_integer(mp_int *num, unsigned char *out, unsigned long *outlen) } if (*outlen < tmplen) { + *outlen = tmplen; return CRYPT_BUFFER_OVERFLOW; } - if (mp_cmp_d(num, 0) != MP_LT) { + if (mp_cmp_d(num, 0) != LTC_MP_LT) { /* we only need a leading zero if the msb of the first byte is one */ - if ((mp_count_bits(num) & 7) == 0 || mp_iszero(num) == MP_YES) { + if ((mp_count_bits(num) & 7) == 0 || mp_iszero(num) == LTC_MP_YES) { leading_zero = 1; } else { leading_zero = 0; @@ -59,7 +60,7 @@ int der_encode_integer(mp_int *num, unsigned char *out, unsigned long *outlen) y = mp_count_bits(num); y = y + (8 - (y & 7)); y = y >> 3; - + if (((mp_cnt_lsb(num)+1)==mp_count_bits(num)) && ((mp_count_bits(num)&7)==0)) --y; } /* now store initial data */ @@ -69,16 +70,16 @@ int der_encode_integer(mp_int *num, unsigned char *out, unsigned long *outlen) *out++ = (unsigned char)y; } else if (y < 256) { *out++ = 0x81; - *out++ = y; + *out++ = (unsigned char)y; } else if (y < 65536UL) { *out++ = 0x82; - *out++ = (y>>8)&255; - *out++ = y; + *out++ = (unsigned char)((y>>8)&255); + *out++ = (unsigned char)y; } else if (y < 16777216UL) { *out++ = 0x83; - *out++ = (y>>16)&255; - *out++ = (y>>8)&255; - *out++ = y; + *out++ = (unsigned char)((y>>16)&255); + *out++ = (unsigned char)((y>>8)&255); + *out++ = (unsigned char)y; } else { return CRYPT_INVALID_ARG; } @@ -89,31 +90,32 @@ int der_encode_integer(mp_int *num, unsigned char *out, unsigned long *outlen) } /* if it's not zero store it as big endian */ - if (mp_cmp_d(num, 0) == MP_GT) { + if (mp_cmp_d(num, 0) == LTC_MP_GT) { /* now store the mpint */ - if ((err = mp_to_unsigned_bin(num, out)) != MP_OKAY) { - return mpi_to_ltc_error(err); + if ((err = mp_to_unsigned_bin(num, out)) != CRYPT_OK) { + return err; } - } else if (mp_iszero(num) != MP_YES) { - mp_int tmp; + } else if (mp_iszero(num) != LTC_MP_YES) { + void *tmp; + /* negative */ - if (mp_init(&tmp) != MP_OKAY) { + if (mp_init(&tmp) != CRYPT_OK) { return CRYPT_MEM; } /* 2^roundup and subtract */ y = mp_count_bits(num); y = y + (8 - (y & 7)); - if (mp_2expt(&tmp, y) != MP_OKAY || mp_add(&tmp, num, &tmp) != MP_OKAY) { - mp_clear(&tmp); + if (((mp_cnt_lsb(num)+1)==mp_count_bits(num)) && ((mp_count_bits(num)&7)==0)) y -= 8; + if (mp_2expt(tmp, y) != CRYPT_OK || mp_add(tmp, num, tmp) != CRYPT_OK) { + mp_clear(tmp); return CRYPT_MEM; } - - if ((err = mp_to_unsigned_bin(&tmp, out)) != MP_OKAY) { - mp_clear(&tmp); - return mpi_to_ltc_error(err); + if ((err = mp_to_unsigned_bin(tmp, out)) != CRYPT_OK) { + mp_clear(tmp); + return err; } - mp_clear(&tmp); + mp_clear(tmp); } /* we good */ @@ -124,5 +126,5 @@ int der_encode_integer(mp_int *num, unsigned char *out, unsigned long *outlen) #endif /* $Source: /cvs/libtom/libtomcrypt/src/pk/asn1/der/integer/der_encode_integer.c,v $ */ -/* $Revision: 1.1 $ */ -/* $Date: 2005/05/16 15:08:11 $ */ +/* $Revision: 1.8 $ */ +/* $Date: 2006/12/04 21:34:03 $ */ diff --git a/libtomcrypt/src/pk/asn1/der/integer/der_length_integer.c b/libtomcrypt/src/pk/asn1/der/integer/der_length_integer.c index 1bfee45..bcc331d 100644 --- a/libtomcrypt/src/pk/asn1/der/integer/der_length_integer.c +++ b/libtomcrypt/src/pk/asn1/der/integer/der_length_integer.c @@ -6,7 +6,7 @@ * The library is free for all purposes without any express * guarantee it works. * - * Tom St Denis, tomstdenis@gmail.com, http://libtomcrypt.org + * Tom St Denis, tomstdenis@gmail.com, http://libtomcrypt.com */ #include "tomcrypt.h" @@ -19,11 +19,11 @@ #ifdef LTC_DER /** Gets length of DER encoding of num - @param num The mp_int to get the size of + @param num The int to get the size of @param outlen [out] The length of the DER encoding for the given integer @return CRYPT_OK if successful */ -int der_length_integer(mp_int *num, unsigned long *outlen) +int der_length_integer(void *num, unsigned long *outlen) { unsigned long z, len; int leading_zero; @@ -31,11 +31,11 @@ int der_length_integer(mp_int *num, unsigned long *outlen) LTC_ARGCHK(num != NULL); LTC_ARGCHK(outlen != NULL); - if (mp_cmp_d(num, 0) != MP_LT) { + if (mp_cmp_d(num, 0) != LTC_MP_LT) { /* positive */ /* we only need a leading zero if the msb of the first byte is one */ - if ((mp_count_bits(num) & 7) == 0 || mp_iszero(num) == MP_YES) { + if ((mp_count_bits(num) & 7) == 0 || mp_iszero(num) == LTC_MP_YES) { leading_zero = 1; } else { leading_zero = 0; @@ -49,6 +49,7 @@ int der_length_integer(mp_int *num, unsigned long *outlen) leading_zero = 0; z = mp_count_bits(num); z = z + (8 - (z & 7)); + if (((mp_cnt_lsb(num)+1)==mp_count_bits(num)) && ((mp_count_bits(num)&7)==0)) --z; len = z = z >> 3; } @@ -77,5 +78,5 @@ int der_length_integer(mp_int *num, unsigned long *outlen) #endif /* $Source: /cvs/libtom/libtomcrypt/src/pk/asn1/der/integer/der_length_integer.c,v $ */ -/* $Revision: 1.1 $ */ -/* $Date: 2005/05/16 15:08:11 $ */ +/* $Revision: 1.4 $ */ +/* $Date: 2006/04/22 01:22:55 $ */ |