diff options
Diffstat (limited to 'openssl/crypto/rc5/rc5_skey.c')
| -rw-r--r-- | openssl/crypto/rc5/rc5_skey.c | 103 |
1 files changed, 50 insertions, 53 deletions
diff --git a/openssl/crypto/rc5/rc5_skey.c b/openssl/crypto/rc5/rc5_skey.c index a2e00a41c..5dd4a5274 100644 --- a/openssl/crypto/rc5/rc5_skey.c +++ b/openssl/crypto/rc5/rc5_skey.c @@ -5,21 +5,21 @@ * This package is an SSL implementation written * by Eric Young (eay@cryptsoft.com). * The implementation was written so as to conform with Netscapes SSL. - * + * * This library is free for commercial and non-commercial use as long as * the following conditions are aheared to. The following conditions * apply to all code found in this distribution, be it the RC4, RSA, * lhash, DES, etc., code; not just the SSL code. The SSL documentation * included with this distribution is covered by the same copyright terms * except that the holder is Tim Hudson (tjh@cryptsoft.com). - * + * * Copyright remains Eric Young's, and as such any Copyright notices in * the code are not to be removed. * If this package is used in a product, Eric Young should be given attribution * as the author of the parts of the library used. * This can be in the form of a textual message at program startup or * in documentation (online or textual) provided with the package. - * + * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: @@ -34,10 +34,10 @@ * Eric Young (eay@cryptsoft.com)" * The word 'cryptographic' can be left out if the rouines from the library * being used are not cryptographic related :-). - * 4. If you include any Windows specific code (or a derivative thereof) from + * 4. If you include any Windows specific code (or a derivative thereof) from * the apps directory (application code) you must include an acknowledgement: * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" - * + * * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE @@ -49,7 +49,7 @@ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. - * + * * The licence and distribution terms for any publically available version or * derivative of this code cannot be changed. i.e. this code cannot simply be * copied and put under another distribution licence @@ -60,54 +60,51 @@ #include "rc5_locl.h" void RC5_32_set_key(RC5_32_KEY *key, int len, const unsigned char *data, - int rounds) - { - RC5_32_INT L[64],l,ll,A,B,*S,k; - int i,j,m,c,t,ii,jj; - - if ( (rounds != RC5_16_ROUNDS) && - (rounds != RC5_12_ROUNDS) && - (rounds != RC5_8_ROUNDS)) - rounds=RC5_16_ROUNDS; + int rounds) +{ + RC5_32_INT L[64], l, ll, A, B, *S, k; + int i, j, m, c, t, ii, jj; - key->rounds=rounds; - S= &(key->data[0]); - j=0; - for (i=0; i<=(len-8); i+=8) - { - c2l(data,l); - L[j++]=l; - c2l(data,l); - L[j++]=l; - } - ii=len-i; - if (ii) - { - k=len&0x07; - c2ln(data,l,ll,k); - L[j+0]=l; - L[j+1]=ll; - } + if ((rounds != RC5_16_ROUNDS) && + (rounds != RC5_12_ROUNDS) && (rounds != RC5_8_ROUNDS)) + rounds = RC5_16_ROUNDS; - c=(len+3)/4; - t=(rounds+1)*2; - S[0]=RC5_32_P; - for (i=1; i<t; i++) - S[i]=(S[i-1]+RC5_32_Q)&RC5_32_MASK; + key->rounds = rounds; + S = &(key->data[0]); + j = 0; + for (i = 0; i <= (len - 8); i += 8) { + c2l(data, l); + L[j++] = l; + c2l(data, l); + L[j++] = l; + } + ii = len - i; + if (ii) { + k = len & 0x07; + c2ln(data, l, ll, k); + L[j + 0] = l; + L[j + 1] = ll; + } - j=(t>c)?t:c; - j*=3; - ii=jj=0; - A=B=0; - for (i=0; i<j; i++) - { - k=(S[ii]+A+B)&RC5_32_MASK; - A=S[ii]=ROTATE_l32(k,3); - m=(int)(A+B); - k=(L[jj]+A+B)&RC5_32_MASK; - B=L[jj]=ROTATE_l32(k,m); - if (++ii >= t) ii=0; - if (++jj >= c) jj=0; - } - } + c = (len + 3) / 4; + t = (rounds + 1) * 2; + S[0] = RC5_32_P; + for (i = 1; i < t; i++) + S[i] = (S[i - 1] + RC5_32_Q) & RC5_32_MASK; + j = (t > c) ? t : c; + j *= 3; + ii = jj = 0; + A = B = 0; + for (i = 0; i < j; i++) { + k = (S[ii] + A + B) & RC5_32_MASK; + A = S[ii] = ROTATE_l32(k, 3); + m = (int)(A + B); + k = (L[jj] + A + B) & RC5_32_MASK; + B = L[jj] = ROTATE_l32(k, m); + if (++ii >= t) + ii = 0; + if (++jj >= c) + jj = 0; + } +} |