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Diffstat (limited to 'plugins/CryptoPP/src/PGPw/sdk8/include/pgpBigNum.h')
-rw-r--r-- | plugins/CryptoPP/src/PGPw/sdk8/include/pgpBigNum.h | 177 |
1 files changed, 177 insertions, 0 deletions
diff --git a/plugins/CryptoPP/src/PGPw/sdk8/include/pgpBigNum.h b/plugins/CryptoPP/src/PGPw/sdk8/include/pgpBigNum.h new file mode 100644 index 0000000000..fdc65e2017 --- /dev/null +++ b/plugins/CryptoPP/src/PGPw/sdk8/include/pgpBigNum.h @@ -0,0 +1,177 @@ +/*____________________________________________________________________________ + Copyright (C) 2002 PGP Corporation + All rights reserved. + + $Id: pgpBigNum.h,v 1.7 2002/08/06 20:11:16 dallen Exp $ +____________________________________________________________________________*/ + +#ifndef Included_pgpBigNum_h +#define Included_pgpBigNum_h + +#include "pgpBase.h" +#include "pgpUtilities.h" + +PGP_BEGIN_C_DECLARATIONS + +typedef struct PGPBigNum * PGPBigNumRef; +#define kPGPInvalidBigNumRef ( (PGPBigNumRef)NULL ) + +/*____________________________________________________________________________ + Bignum basics +____________________________________________________________________________*/ +PGPError PGPNewBigNum( PGPContextRef context, PGPBoolean secure, + PGPBigNumRef *newBN ); + +PGPError PGPFreeBigNum( PGPBigNumRef bn ); + +PGPError PGPCopyBigNum( PGPBigNumRef src, PGPBigNumRef * dest ); +PGPError PGPAssignBigNum( PGPBigNumRef src, PGPBigNumRef dest ); +PGPError PGPSwapBigNum( PGPBigNumRef a, PGPBigNumRef b); + +/* +** Move bytes between the given buffer and the given BigNum encoded in +** base 256. I.e. after either of these, the buffer will be equal to +** (bn / 256^lsbyte) % 256^len. The difference is which is altered to +** match the other! +*/ +PGPError PGPBigNumExtractBigEndianBytes( PGPBigNumRef bn, + PGPByte *dest, PGPUInt32 lsbyte, PGPUInt32 len ); + +PGPError PGPBigNumInsertBigEndianBytes(PGPBigNumRef bn, + PGPByte const *src, PGPUInt32 lsbyte, PGPUInt32 len ); + +/* The same, but the buffer is little-endian. */ +PGPError PGPBigNumExtractLittleEndianBytes( PGPBigNumRef bn, + PGPByte *dest, PGPUInt32 lsbyte, PGPUInt32 len ); + +PGPError PGPBigNumInsertLittleEndianBytes(PGPBigNumRef bn, + PGPByte const *src, PGPUInt32 lsbyte, PGPUInt32 len ); + +/* Return the least-significant bits (at least 16) of the BigNum */ +PGPUInt16 PGPBigNumGetLSWord( PGPBigNumRef bn ); + +/* + * Return the number of significant bits in the BigNum. + * 0 or 1+floor(log2(src)) + */ +PGPUInt32 PGPBigNumGetSignificantBits( PGPBigNumRef bn ); + +/* + * Adds two bignums into dest. Faster if dest is same as lhs or rhs. + */ +PGPError PGPBigNumAdd( PGPBigNumRef lhs, PGPBigNumRef rhs, + PGPBigNumRef dest ); + +/* + * lhs-rhs. dest and src may be the same, but bnSetQ(dest, 0) is faster. + * if dest < src, returns error and dest is undefined. + */ +PGPError PGPBigNumSubtract( PGPBigNumRef lhs, PGPBigNumRef rhs, + PGPBigNumRef dest, PGPBoolean *underflow ); + +/* Return sign (-1, 0, +1) of a-b. a <=> b --> bnCmpQ(a, b) <=> 0 */ +PGPInt32 PGPBigNumCompareQ( PGPBigNumRef bn, PGPUInt16 sm ); + +/* dest = src, where 0 <= src < 2^16. */ +PGPError PGPBigNumSetQ( PGPBigNumRef dest, PGPUInt16 sm ); + +/* dest = bn + sm, where 0 <= sm < 2^16 */ +PGPError PGPBigNumAddQ( PGPBigNumRef bn, PGPUInt16 sm, + PGPBigNumRef dest); + +/* dest = bn + sm, where 0 <= sm < 2^16 */ +PGPError PGPBigNumSubtractQ( PGPBigNumRef bn, PGPUInt16 sm, + PGPBigNumRef dest, PGPBoolean *underflow); + +/* Return sign (-1, 0, +1) of a-b. a <=> b --> bnCmp(a, b) <=> 0 */ +PGPInt32 PGPBigNumCompare( PGPBigNumRef lhs, PGPBigNumRef rhs); + +/* dest = src * src. dest may be the same as src, but it costs time. */ +PGPError PGPBigNumSquare( PGPBigNumRef src, PGPBigNumRef dest); + +/* dest = a * b. dest may be the same as a or b, but it costs time. */ +PGPError PGPBigNumMultiply( PGPBigNumRef lhs, PGPBigNumRef rhs, + PGPBigNumRef dest); + +/* dest = a * b, where 0 <= b < 2^16. dest and a may be the same. */ +PGPError PGPBigNumMultiplyQ( PGPBigNumRef lhs, PGPUInt16 sm, + PGPBigNumRef dest); + +/* + * q = n/d, r = n%d. r may be the same as n, but not d, + * and q may not be the same as n or d. + * re-entrancy issue: this temporarily modifies d, but restores + * it for return. + */ +PGPError PGPBigNumDivide( PGPBigNumRef numerator, PGPBigNumRef denominator, + PGPBigNumRef quotient, PGPBigNumRef remainder); +/* + * dest = n % d. dest and src may be the same, but not dest and d. + * re-entrancy issue: this temporarily modifies d, but restores + * it for return. + */ +PGPError PGPBigNumMod( PGPBigNumRef numerator, PGPBigNumRef denominator, + PGPBigNumRef dest ); + +/* return src % d, where 0 <= d < 2^16. */ +PGPUInt16 PGPBigNumModQ( PGPBigNumRef numerator, PGPUInt16 denominator ); + +/* n = n^exp, modulo "mod" "mod" *must* be odd */ +PGPError PGPBigNumExpMod( PGPBigNumRef n, PGPBigNumRef exponent, + PGPBigNumRef mod, PGPBigNumRef dest ); + +/* + * dest = n1^e1 * n2^e2, modulo "mod". "mod" *must* be odd. + * dest may be the same as n1 or n2. + */ +PGPError PGPBigNumDoubleExpMod( PGPBigNumRef n1, PGPBigNumRef exponent1, + PGPBigNumRef n2, PGPBigNumRef exponent2, + PGPBigNumRef mod, PGPBigNumRef dest ); + +/* dest = 2^exp, modulo "mod" "mod" *must* be odd */ +PGPError PGPBigNumTwoExpMod( PGPBigNumRef exponent, PGPBigNumRef mod, + PGPBigNumRef dest ); + +/* dest = gcd(a, b). The inputs may overlap arbitrarily. */ +PGPError PGPBigNumGCD( PGPBigNumRef a, PGPBigNumRef b, PGPBigNumRef dest ); + +/* dest = src^-1, modulo "mod". dest may be the same as src. */ +PGPError PGPBigNumInv( PGPBigNumRef src, PGPBigNumRef mod, + PGPBigNumRef dest ); + + +/* Shift dest left "amt" places */ +PGPError PGPBigNumLeftShift( PGPBigNumRef dest, PGPUInt32 amt ); + +/* Shift dest right "amt" places, discarding low-order bits */ +PGPError PGPBigNumRightShift( PGPBigNumRef dest, PGPUInt32 amt ); + +/* right shift all low order 0-bits, return number of bits shifted */ +PGPUInt16 PGPBigNumMakeOdd( PGPBigNumRef dest ); + + +PGP_END_C_DECLARATIONS + +#endif /* Included_pgpBigNum_h */ + + +/*__Editor_settings____ + + Local Variables: + tab-width: 4 + End: + vi: ts=4 sw=4 + vim: si +_____________________*/ + + + + + + + + + + + + |