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Message Length Evaluation on IEEE 1609.2 and IEEE 1609.2.1 Messages

122Message LengthIEEE Standards
-328.242,710.885,7508,789.12Jun 12, 2026

Evaluation results

MethodLinks
IEEE StandardsCryptographic Algorithms=ECDSA P-256 + ECIES P-256, Message Type=Signed SPDU including PC digest with BSM2026.061220
Proposed Generalized Pseudonym SchemeCryptographic Algorithms=Falcon-512 + ML-KEM-512, Message Type=Signed SPDU including PC digest with BSM2026.06122—
Proposed Generalized Pseudonym SchemeCryptographic Algorithms=Falcon-512 + HQC-128, Message Type=Signed SPDU including PC digest with BSM2026.06122—
IEEE StandardsCryptographic Algorithms=ECDSA P-256 + ECIES P-256, Message Type=EeEcaCertRequestSpdu2026.061640
IEEE StandardsCryptographic Algorithms=ECDSA P-256 + ECIES P-256, Message Type=Signed SPDU including full PC with BSM2026.062120
IEEE StandardsCryptographic Algorithms=ECDSA P-256 + ECIES P-256, Message Type=RaEeCertAckSpdu2026.063130
IEEE StandardsCryptographic Algorithms=ECDSA P-256 + ECIES P-256, Message Type=EeRaDownloadRequestSpdu2026.063150
IEEE StandardsCryptographic Algorithms=ECDSA P-256 + ECIES P-256, Message Type=EeRaCertRequestSpdu2026.064160
IEEE StandardsCryptographic Algorithms=ECDSA P-256 + ECIES P-256, Message Type=AcaEeCertResponsePrivateSpdu2026.065040
IEEE StandardsCryptographic Algorithms=ECDSA P-256 + ECIES P-256, Message Type=RaAcaCertRequestSpdu2026.066280
IEEE StandardsCryptographic Algorithms=ECDSA P-256 + ECIES P-256, Message Type=AcaRaCertResponseSpdu2026.067640
Proposed Generalized Pseudonym SchemeCryptographic Algorithms=Falcon-512 + ML-KEM-512, Message Type=Signed SPDU including full PC with BSM2026.06813—
Proposed Generalized Pseudonym SchemeCryptographic Algorithms=Falcon-512 + HQC-128, Message Type=Signed SPDU including full PC with BSM2026.06813—
IEEE StandardsCryptographic Algorithms=ECDSA P-256 + ECIES P-256, Message Type=EcaEeCertResponseSpdu2026.069540
Proposed Generalized Pseudonym SchemeCryptographic Algorithms=Falcon-512 + ML-KEM-512, Message Type=EeRaDownloadRequestSpdu2026.061,5531
Proposed Generalized Pseudonym SchemeCryptographic Algorithms=Falcon-512 + ML-KEM-512, Message Type=EeEcaCertRequestSpdu2026.061,6291
Proposed Generalized Pseudonym SchemeCryptographic Algorithms=Falcon-512 + HQC-128, Message Type=EeEcaCertRequestSpdu2026.061,6291
Proposed Generalized Pseudonym SchemeCryptographic Algorithms=Falcon-512 + ML-KEM-512, Message Type=AcaRaCertResponseSpdu2026.062,4441
Proposed Generalized Pseudonym SchemeCryptographic Algorithms=Falcon-512 + HQC-128, Message Type=AcaRaCertResponseSpdu2026.062,4441
Proposed Generalized Pseudonym SchemeCryptographic Algorithms=Falcon-512 + ML-KEM-512, Message Type=RaEeCertAckSpdu2026.063,1461
Proposed Generalized Pseudonym SchemeCryptographic Algorithms=Falcon-512 + ML-KEM-512, Message Type=AcaEeCertResponsePrivateSpdu2026.063,1711
Proposed Generalized Pseudonym SchemeCryptographic Algorithms=Falcon-512 + HQC-128, Message Type=AcaEeCertResponsePrivateSpdu2026.063,1711
Proposed Generalized Pseudonym SchemeCryptographic Algorithms=Falcon-512 + ML-KEM-512, Message Type=EeRaCertRequestSpdu2026.063,9201
Proposed Generalized Pseudonym SchemeCryptographic Algorithms=Falcon-512 + ML-KEM-512, Message Type=RaAcaCertRequestSpdu2026.064,1631
Proposed Generalized Pseudonym SchemeCryptographic Algorithms=Falcon-512 + HQC-128, Message Type=RaEeCertAckSpdu2026.064,5951
Proposed Generalized Pseudonym SchemeCryptographic Algorithms=Falcon-512 + HQC-128, Message Type=EeRaDownloadRequestSpdu2026.065,2821
Proposed Generalized Pseudonym SchemeCryptographic Algorithms=Falcon-512 + ML-KEM-512, Message Type=EcaEeCertResponseSpdu2026.068,8801
Proposed Generalized Pseudonym SchemeCryptographic Algorithms=Falcon-512 + HQC-128, Message Type=EcaEeCertResponseSpdu2026.068,8801
Proposed Generalized Pseudonym SchemeCryptographic Algorithms=Falcon-512 + HQC-128, Message Type=RaAcaCertRequestSpdu2026.069,3411
Proposed Generalized Pseudonym SchemeCryptographic Algorithms=Falcon-512 + HQC-128, Message Type=EeRaCertRequestSpdu2026.0611,3781