The following lists algorithm support for the Plain Signer.

The signer also relies on support for the algorithm in the Crypto Token used. Ensure that the desired algorithm is supported by the configured crypto token. 

The following lists supported algorithms that are tested and known to work with a Crypto Token supporting it and therefore the list may not be complete.

Signature Algorithms

Support

Algorithm Name

Also Known As

Comment

(tick)

SHA1withECDSA

ECDSA using SHA1

(tick)

SHA256withECDSA

ECDSA using SHA256

(tick)

SHA384withECDSA

ECDSA using SHA384

(tick)

SHA512withECDSA

ECDSA using SHA512

(tick)

NONEwithECDSA

ECDSA

See Code Signing with Client-side Hashing for what the input should be.

(tick)

Ed25519

Pure EdDSA with Edwards25519

(tick)

Ed448

Pure EdDSA with Edwards448

(tick)

SHA1withRSA

RSASSA-PKCS1_v1.5 using SHA1

(tick)

SHA256withRSA

RSASSA-PKCS1_v1.5 using SHA256

(tick)

SHA384withRSA

RSASSA-PKCS1_v1.5 using SHA384

(tick)

SHA512withRSA

RSASSA-PKCS1_v1.5 using SHA512

(tick)

NONEwithRSA

RSASSA-PKCS1_v1.5

See Code Signing with Client-side Hashing since special encoding of the request might be needed unless client-side hashing is specified explicitly in request metadata.

(tick)

SHA1withRSAandMGF1

RSASSA-PSS using SHA1

(tick)

SHA256withRSAandMGF1

RSASSA-PSS using SHA256

(tick)

SHA384withRSAandMGF1

RSASSA-PSS using SHA384

(tick)

SHA512withRSAandMGF1

RSASSA-PSS using SHA512

(tick)

NONEwithRSAandMGF1

RSASSA-PSS

See Code Signing with Client-side Hashing since request metadata might be needed with the request.

(tick)

ML-DSA-44

Pure ML-DSA-44

(tick)

ML-DSA-65

Pure ML-DSA-65

(tick)

ML-DSA-87

Pure ML-DSA-87

(tick)

ML-DSA-EXTERNAL-MU

ML-DSA External μ

See the ML-DSA External μ section under Code Signing with Client-side Hashing for details.

(tick)

SLH-DSA-SHA2-128F

Pure SLH-DSA-SHA2-128F

(tick)

SLH-DSA-SHA2-128S

Pure SLH-DSA-SHA2-128S

(tick)

SLH-DSA-SHA2-192F

Pure SLH-DSA-SHA2-192F

(tick)

SLH-DSA-SHA2-192S

Pure SLH-DSA-SHA2-192S

(tick)

SLH-DSA-SHA2-256F

Pure SLH-DSA-SHA2-256F

(tick)

SLH-DSA-SHA2-256S

Pure SLH-DSA-SHA2-256S

(tick)

SLH-DSA-SHAKE-128F

Pure SLH-DSA-SHAKE-128F

(tick)

SLH-DSA-SHAKE-128S

Pure SLH-DSA-SHAKE-128S

(tick)

SLH-DSA-SHAKE-192F

Pure SLH-DSA-SHAKE-192F

(tick)

SLH-DSA-SHAKE-192S

Pure SLH-DSA-SHAKE-192S

(tick)

SLH-DSA-SHAKE-256F

Pure SLH-DSA-SHAKE-256F

(tick)

SLH-DSA-SHAKE-256S

Pure SLH-DSA-SHAKE-256S

Digest Algorithms Supported with Explicit Client-Side Hashing

Support

Algorithm Name

(tick)

SHA1

(tick)

SHA256

(tick)

SHA384

(tick)

SHA512

Composite Algorithms

For more information on composite algorithms, see SignServer Composite Certificates.

Support

Signature Algorithm

(tick)

MLDSA44-RSA2048-PSS-SHA256

(tick)

MLDSA44-ECDSA-P256-SHA256

(tick)

MLDSA44-Ed25519-SHA512

(tick)

MLDSA65-RSA3072-PSS-SHA512

(tick)

MLDSA65-RSA4096-PSS-SHA512

(tick)

MLDSA65-ECDSA-P256-SHA512

(tick)

MLDSA65-ECDSA-P384-SHA512

(tick)

MLDSA65-ECDSA-brainpoolP256r1-SHA512

(tick)

MLDSA65-Ed25519-SHA512

(tick)

MLDSA87-RSA3072-PSS-SHA512

(tick)

MLDSA87-RSA4096-PSS-SHA512

(tick)

MLDSA87-ECDSA-P384-SHA512

(tick)

MLDSA87-ECDSA-P521-SHA512

(tick)

MLDSA87-ECDSA-brainpoolP384r1-SHA512

(tick)

MLDSA87-Ed448-SHAKE256