Constant ring::signature::ED25519_PKCS8_V2_LEN

pub const ED25519_PKCS8_V2_LEN: usize = 85

The length of a Ed25519 PKCS#8 (v2) private key generated by Ed25519KeyPair::generate_pkcs8(). Ed25519 PKCS#8 files generated by other software may have different lengths, and Ed25519KeyPair::generate_pkcs8() may generate files of a different length in the future.