diff options
Diffstat (limited to 'src/lib/math/bigint/bigint.h')
| -rw-r--r-- | src/lib/math/bigint/bigint.h | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/src/lib/math/bigint/bigint.h b/src/lib/math/bigint/bigint.h index d866698b3..776884ad9 100644 --- a/src/lib/math/bigint/bigint.h +++ b/src/lib/math/bigint/bigint.h @@ -74,11 +74,15 @@ class BOTAN_DLL BigInt BigInt(const byte buf[], size_t length, Base base = Binary); /** - * Create a random BigInt of the specified size + * \brief Create a random BigInt of the specified size + * * @param rng random number generator * @param bits size in bits + * @param set_high_bit if true, the highest bit is always set + * + * @see randomize */ - BigInt(RandomNumberGenerator& rng, size_t bits); + BigInt(RandomNumberGenerator& rng, size_t bits, bool set_high_bit = true); /** * Create BigInt of specified size, all zeros @@ -431,10 +435,16 @@ class BOTAN_DLL BigInt /** * Fill BigInt with a random number with size of bitsize + * + * If \p set_high_bit is true, the highest bit will be set, which causes + * the entropy to be \a bits-1. Otherwise the highest bit is randomly choosen + * by the rng, causing the entropy to be \a bits. + * * @param rng the random number generator to use * @param bitsize number of bits the created random value should have + * @param set_high_bit if true, the highest bit is always set */ - void randomize(RandomNumberGenerator& rng, size_t bitsize = 0); + void randomize(RandomNumberGenerator& rng, size_t bitsize, bool set_high_bit = true); /** * Store BigInt-value in a given byte array |