const crypto/sha512.magic512_256

4 uses

	crypto/sha512 (current package)
		sha512.go#L136: 	magic512_256  = "sha\x06"
		sha512.go#L149: 		b = append(b, magic512_256...)
		sha512.go#L176: 	case d.function == crypto.SHA512_256 && string(b[:len(magic512_256)]) == magic512_256: