Algorithm Support

This page lists algorithms that are known to work or not work with the current implementation. Also, see the specific SignServer Signer for algorithms that signers can work with and review signer-specific algorithm support pages.

Signature Algorithms

Algorithm Name	Also Known As	Comment
SHA1withRSA	RSASSA-PKCS_v1.5 using SHA1
SHA256withRSA	RSASSA-PKCS_v1.5 using SHA256
SHA512withRSA	RSASSA-PKCS_v1.5 using SHA512
NONEwithRSA	RSASSA-PKCS_v1.5
SHA256withRSAandMGF1	RSASSA-PSS using SHA256
SHA512withRSAandMGF1	RSASSA-PSS using SHA512
NONEwithRSAandMGF1	RSASSA-PSS
SHA256withECDSA	ECDSA using SHA256
SHA512withECDSA	ECDSA using SHA512
NONEwithECDSA	ECDSA
Ed25519	Pure EdDSA with Edwards25519	Depending on the Signer.
Ed448	Pure EdDSA with Edwards448	Not yet implemented.

Key Algorithms

Algorithm Name

Key Specification

Comment

RSA

1024
2048
4096

Other key lengths are likely also working.

ECDSA

Named curves:

secp224r1
secp256r1 / prime256v1 / P-256
secp384r1
secp521r1

More named curves are likely working.

EdDSA

Ed25519