1.32 CRYPT_ECC_SignatureSizeGet Function

int CRYPT_ECC_SignatureSizeGet(
    CRYPT_ECC_CTX* ecc
);

This function returns the size of the signature in a given context, in octets.

The ECC context must have been initialized with a call to CRYPT_ECC_Initialize. The keys must have been imported or created prior to calling this function.

• BAD_FUNC_ARG - An invalid pointer was passed to the function
• int - The size of the signature

None.

CRYPT_ECC_CTX userA;
int           ret;
byte          sig[100];
unsigned int  sigSz = (unsigned int)sizeof(sig);
unsigned int  usedA = 0;

ret = CRYPT_ECC_Initialize(&userA);
...
// Import or generate private key
...
ret = CRYPT_ECC_SignatureSizeGet(&userA);