Function sha256_iv

src/simplicity/sha256.h:114–123

Sets the value of 'iv' to SHA-256's initial value. * * Precondition: uint32_t iv[8] */

 * Precondition: uint32_t iv[8]
 */
static inline void sha256_iv(uint32_t* iv) {
    iv[0] = 0x6a09e667ul;
    iv[1] = 0xbb67ae85ul;
    iv[2] = 0x3c6ef372ul;
    iv[3] = 0xa54ff53aul;
    iv[4] = 0x510e527ful;
    iv[5] = 0x9b05688cul;
    iv[6] = 0x1f83d9abul;
    iv[7] = 0x5be0cd19ul;
}

/* Given a 256-bit 'midstate' and a 512-bit 'block', then 'midstate' becomes the value of the SHA-256 compression function ("added" to the original 'midstate' value).
 *