diff options
Diffstat (limited to 'src/crypto/rand/internal.h')
-rw-r--r-- | src/crypto/rand/internal.h | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/src/crypto/rand/internal.h b/src/crypto/rand/internal.h index f35abbb..1cca7f3 100644 --- a/src/crypto/rand/internal.h +++ b/src/crypto/rand/internal.h @@ -24,10 +24,13 @@ extern "C" { * system. */ void CRYPTO_sysrand(uint8_t *buf, size_t len); -/* CRYPTO_hwrand fills |len| bytes at |buf| with entropy from the hardware. It - * returns one on success or zero on hardware failure or if hardware support is - * unavailable. */ -int CRYPTO_hwrand(uint8_t *buf, size_t len); +/* CRYPTO_have_hwrand returns one iff |CRYPTO_hwrand| can be called to generate + * hardware entropy. */ +int CRYPTO_have_hwrand(void); + +/* CRYPTO_hwrand fills |len| bytes at |buf| with entropy from the hardware. + * This function can only be called if |CRYPTO_have_hwrand| returns one. */ +void CRYPTO_hwrand(uint8_t *buf, size_t len); #if defined(__cplusplus) |