diff options
Diffstat (limited to 'crypto/des/des_enc.c')
| -rw-r--r-- | crypto/des/des_enc.c | 211 |
1 files changed, 206 insertions, 5 deletions
diff --git a/crypto/des/des_enc.c b/crypto/des/des_enc.c index b04e12dc29..e4db09299e 100644 --- a/crypto/des/des_enc.c +++ b/crypto/des/des_enc.c @@ -1,5 +1,5 @@ /* crypto/des/des_enc.c */ -/* Copyright (C) 1995-1997 Eric Young (eay@cryptsoft.com) +/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) * All rights reserved. * * This package is an SSL implementation written @@ -183,8 +183,8 @@ int enc; * Thanks to Richard Outerbridge <71755.204@CompuServe.COM> * for pointing this out. */ /* clear the top bits on machines with 8byte longs */ - r=ROTATE(r,29)&0xffffffff; - l=ROTATE(l,29)&0xffffffff; + r=ROTATE(r,29)&0xffffffffL; + l=ROTATE(l,29)&0xffffffffL; s=(DES_LONG *)ks; /* I don't know if it is worth the effort of loop unrolling the @@ -248,8 +248,8 @@ int enc; #endif } /* rotate and clear the top bits on machines with 8byte longs */ - data[0]=ROTATE(l,3)&0xffffffff; - data[1]=ROTATE(r,3)&0xffffffff; + data[0]=ROTATE(l,3)&0xffffffffL; + data[1]=ROTATE(r,3)&0xffffffffL; l=r=t=u=0; } @@ -299,3 +299,204 @@ des_key_schedule ks3; data[1]=r; } +#ifndef DES_DEFAULT_OPTIONS + +void des_ncbc_encrypt(input, output, length, schedule, ivec, enc) +des_cblock (*input); +des_cblock (*output); +long length; +des_key_schedule schedule; +des_cblock (*ivec); +int enc; + { + register DES_LONG tin0,tin1; + register DES_LONG tout0,tout1,xor0,xor1; + register unsigned char *in,*out; + register long l=length; + DES_LONG tin[2]; + unsigned char *iv; + + in=(unsigned char *)input; + out=(unsigned char *)output; + iv=(unsigned char *)ivec; + + if (enc) + { + c2l(iv,tout0); + c2l(iv,tout1); + for (l-=8; l>=0; l-=8) + { + c2l(in,tin0); + c2l(in,tin1); + tin0^=tout0; tin[0]=tin0; + tin1^=tout1; tin[1]=tin1; + des_encrypt((DES_LONG *)tin,schedule,DES_ENCRYPT); + tout0=tin[0]; l2c(tout0,out); + tout1=tin[1]; l2c(tout1,out); + } + if (l != -8) + { + c2ln(in,tin0,tin1,l+8); + tin0^=tout0; tin[0]=tin0; + tin1^=tout1; tin[1]=tin1; + des_encrypt((DES_LONG *)tin,schedule,DES_ENCRYPT); + tout0=tin[0]; l2c(tout0,out); + tout1=tin[1]; l2c(tout1,out); + } + iv=(unsigned char *)ivec; + l2c(tout0,iv); + l2c(tout1,iv); + } + else + { + c2l(iv,xor0); + c2l(iv,xor1); + for (l-=8; l>=0; l-=8) + { + c2l(in,tin0); tin[0]=tin0; + c2l(in,tin1); tin[1]=tin1; + des_encrypt((DES_LONG *)tin,schedule,DES_DECRYPT); + tout0=tin[0]^xor0; + tout1=tin[1]^xor1; + l2c(tout0,out); + l2c(tout1,out); + xor0=tin0; + xor1=tin1; + } + if (l != -8) + { + c2l(in,tin0); tin[0]=tin0; + c2l(in,tin1); tin[1]=tin1; + des_encrypt((DES_LONG *)tin,schedule,DES_DECRYPT); + tout0=tin[0]^xor0; + tout1=tin[1]^xor1; + l2cn(tout0,tout1,out,l+8); + xor0=tin0; + xor1=tin1; + } + + iv=(unsigned char *)ivec; + l2c(xor0,iv); + l2c(xor1,iv); + } + tin0=tin1=tout0=tout1=xor0=xor1=0; + tin[0]=tin[1]=0; + } + +void des_ede3_cbc_encrypt(input, output, length, ks1, ks2, ks3, ivec, enc) +des_cblock (*input); +des_cblock (*output); +long length; +des_key_schedule ks1; +des_key_schedule ks2; +des_key_schedule ks3; +des_cblock (*ivec); +int enc; + { + register DES_LONG tin0,tin1; + register DES_LONG tout0,tout1,xor0,xor1; + register unsigned char *in,*out; + register long l=length; + DES_LONG tin[2]; + unsigned char *iv; + + in=(unsigned char *)input; + out=(unsigned char *)output; + iv=(unsigned char *)ivec; + + if (enc) + { + c2l(iv,tout0); + c2l(iv,tout1); + for (l-=8; l>=0; l-=8) + { + c2l(in,tin0); + c2l(in,tin1); + tin0^=tout0; + tin1^=tout1; + + tin[0]=tin0; + tin[1]=tin1; + des_encrypt3((DES_LONG *)tin,ks1,ks2,ks3); + tout0=tin[0]; + tout1=tin[1]; + + l2c(tout0,out); + l2c(tout1,out); + } + if (l != -8) + { + c2ln(in,tin0,tin1,l+8); + tin0^=tout0; + tin1^=tout1; + + tin[0]=tin0; + tin[1]=tin1; + des_encrypt3((DES_LONG *)tin,ks1,ks2,ks3); + tout0=tin[0]; + tout1=tin[1]; + + l2c(tout0,out); + l2c(tout1,out); + } + iv=(unsigned char *)ivec; + l2c(tout0,iv); + l2c(tout1,iv); + } + else + { + register DES_LONG t0,t1; + + c2l(iv,xor0); + c2l(iv,xor1); + for (l-=8; l>=0; l-=8) + { + c2l(in,tin0); + c2l(in,tin1); + + t0=tin0; + t1=tin1; + + tin[0]=tin0; + tin[1]=tin1; + des_decrypt3((DES_LONG *)tin,ks1,ks2,ks3); + tout0=tin[0]; + tout1=tin[1]; + + tout0^=xor0; + tout1^=xor1; + l2c(tout0,out); + l2c(tout1,out); + xor0=t0; + xor1=t1; + } + if (l != -8) + { + c2l(in,tin0); + c2l(in,tin1); + + t0=tin0; + t1=tin1; + + tin[0]=tin0; + tin[1]=tin1; + des_decrypt3((DES_LONG *)tin,ks1,ks2,ks3); + tout0=tin[0]; + tout1=tin[1]; + + tout0^=xor0; + tout1^=xor1; + l2cn(tout0,tout1,out,l+8); + xor0=t0; + xor1=t1; + } + + iv=(unsigned char *)ivec; + l2c(xor0,iv); + l2c(xor1,iv); + } + tin0=tin1=tout0=tout1=xor0=xor1=0; + tin[0]=tin[1]=0; + } + +#endif /* DES_DEFAULT_OPTIONS */ |