TOOLS / ENCRYPTIONRSA DER Public Key
Encode and decode PKCS#1 public keys.
Calculator reference
Verification evidence and limitations →
What it calculates
Encodes or decodes a PKCS#1 RSA public-key structure.
Inputs and methods
HEX modulus and exponent, or a DER sequence containing two INTEGER values.
Worked example
Encode toy modulus 0CA1 and exponent 11.
300702020CA1020111
Specification and limits
This toy key is not secure. The decoder expects PKCS#1, not a SubjectPublicKeyInfo wrapper.
RFC 8017 ↗ 