a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync/* Initialize SHA1 computation. Returns NULL on error. */
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync * Add some data to be hashed. ctx is the value returned by x_sha1_init()
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync * Returns 0 on error, 1 on success.
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync * Place the hash in result, and free ctx.
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsync * Returns 0 on error, 1 on success.
a3f3701cea1ba388e7c877955252bb7375eedebdvboxsyncint x_sha1_final(void *ctx, unsigned char result[20]);