Cr50 U2F Cryptographic Library

Certificate #4652

Webpage information

Status active
Validation dates 06.11.2023
Sunset date 21-09-2026
Standard FIPS 140-2
Security level 1
Type Firmware-Hybrid
Embodiment Single Chip
Caveat When operated in FIPS mode. No assurance of the minimum strength of generated keys.
Exceptions
  • Physical Security: Level 3
  • Mitigation of Other Attacks: N/A
Description The Cr50 U2F Cryptographic Library is a firmware-hybrid module residing in the Google, LLC Google Security Chips (GSC) chip. The module is responsible for low-level cryptographic primitives on Google Security Chips (GSC) used in recent versions of Google Chromebooks, and includes functionality for key generation, signature generation, random bit generation, keyed-hashing and signature verification operations in support of U2F-related requests in the Cr50 Chrome OS.
Version (Hardware) H1B2P
Version (Firmware) 1.0.1
Tested configurations
  • Google H1B2 with ARM V7-M with PAA
Vendor Google, LLC
References

This certificate's webpage directly references 0 certificates, transitively this expands into 0 certificates.
Certificate
Webpage

Security policy

Security target PDF TXT

Symmetric Algorithms
AES, HMAC, HMAC-SHA-256
Asymmetric Algorithms
ECDSA, ECC, DH, Diffie-Hellman
Hash functions
SHA-1, SHA-256, SHA-384, SHA-512
Schemes
MAC, Key Agreement
Randomness
TRNG, DRBG
Elliptic Curves
P-256
Block cipher modes
ECB, CBC, CFB, GCM

Security level
Level 1, Level 5, Level 3

Standards
FIPS 140-2, FIPS 140, FIPS 186-4, FIPS 198-1, FIPS 180-4, NIST SP 800-90B, SP 800-90A, SP 800-90B, SP 800-90

File metadata

Author klasoski
Creation date D:20230919113147-04'00'
Modification date D:20230919113613-04'00'
Pages 15
Creator Acrobat PDFMaker 23 for Word
Producer Adobe PDF Library 23.6.96

Heuristics

No heuristics are available for this certificate.

References

No references are available for this certificate.

Updates

  • The certificate data changed.
  • The certificate data changed.
  • The certificate data changed.
  • The certificate was first processed.

Raw data 

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  "cert_id": 4652,
  "dgst": "13b9f23e5ea0d47a",
  "heuristics": {
    "_type": "sec_certs.sample.fips.FIPSCertificate.Heuristics",
    "algorithms": {
      "_type": "Set",
      "elements": [
        "HMAC#A2353",
        "DRBG#A2353",
        "ECDSA#A2353",
        "SHS#A2353",
        "SHS#A2352",
        "HMAC#A2352"
      ]
    },
    "cpe_matches": null,
    "direct_transitive_cves": null,
    "extracted_versions": {
      "_type": "Set",
      "elements": [
        "1.0.1"
      ]
    },
    "indirect_transitive_cves": null,
    "module_processed_references": {
      "_type": "sec_certs.sample.certificate.References",
      "directly_referenced_by": null,
      "directly_referencing": null,
      "indirectly_referenced_by": null,
      "indirectly_referencing": null
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    "module_prunned_references": {
      "_type": "Set",
      "elements": []
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    "policy_processed_references": {
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      "directly_referencing": null,
      "indirectly_referenced_by": null,
      "indirectly_referencing": null
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    "policy_prunned_references": {
      "_type": "Set",
      "elements": []
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    "related_cves": null,
    "verified_cpe_matches": null
  },
  "pdf_data": {
    "_type": "sec_certs.sample.fips.FIPSCertificate.PdfData",
    "keywords": {
      "asymmetric_crypto": {
        "ECC": {
          "ECC": {
            "ECC": 1
          },
          "ECDSA": {
            "ECDSA": 14
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        },
        "FF": {
          "DH": {
            "DH": 3,
            "Diffie-Hellman": 1
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      },
      "certification_process": {},
      "cipher_mode": {
        "CBC": {
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        "CFB": {
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        },
        "ECB": {
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        "GCM": {
          "GCM": 2
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      },
      "cplc_data": {},
      "crypto_engine": {},
      "crypto_library": {},
      "crypto_protocol": {},
      "crypto_scheme": {
        "KA": {
          "Key Agreement": 1
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        "MAC": {
          "MAC": 1
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      "device_model": {},
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        "NIST": {
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      },
      "eval_facility": {},
      "fips_cert_id": {},
      "fips_certlike": {
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          "HMAC-SHA-256": 8,
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          "SHA-256": 8,
          "SHA-384": 1,
          "SHA-512": 1
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      "fips_security_level": {
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          "Level 3": 1,
          "Level 5": 2
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      "hash_function": {
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            "SHA-384": 1,
            "SHA-512": 1
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      "ic_data_group": {},
      "javacard_api_const": {},
      "javacard_packages": {},
      "javacard_version": {},
      "os_name": {},
      "pq_crypto": {},
      "randomness": {
        "PRNG": {
          "DRBG": 7
        },
        "TRNG": {
          "TRNG": 3
        }
      },
      "side_channel_analysis": {},
      "standard_id": {
        "FIPS": {
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          "FIPS 140-2": 12,
          "FIPS 180-4": 2,
          "FIPS 186-4": 1,
          "FIPS 198-1": 2
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          "SP 800-90": 1,
          "SP 800-90A": 2,
          "SP 800-90B": 3
        }
      },
      "symmetric_crypto": {
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          "AES": {
            "AES": 4
          }
        },
        "constructions": {
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            "HMAC": 8,
            "HMAC-SHA-256": 4
          }
        }
      },
      "tee_name": {},
      "tls_cipher_suite": {},
      "vendor": {},
      "vulnerability": {}
    },
    "policy_metadata": {
      "/Author": "klasoski",
      "/Comments": "",
      "/Company": "",
      "/CreationDate": "D:20230919113147-04\u002700\u0027",
      "/Creator": "Acrobat PDFMaker 23 for Word",
      "/Keywords": "",
      "/ModDate": "D:20230919113613-04\u002700\u0027",
      "/Producer": "Adobe PDF Library 23.6.96",
      "/SourceModified": "D:20230919152849",
      "/Subject": "",
      "/Title": "",
      "pdf_file_size_bytes": 519240,
      "pdf_hyperlinks": {
        "_type": "Set",
        "elements": [
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          "https://csrc.nist.gov/projects/cryptographic-algorithm-validation-program/details?product=14853",
          "http://csrc.nist.gov/groups/STM/cmvp/index.html",
          "https://www.w3.org/TR/webauthn-1/#sctn-authenticator-model"
        ]
      },
      "pdf_is_encrypted": false,
      "pdf_number_of_pages": 15
    }
  },
  "state": {
    "_type": "sec_certs.sample.fips.FIPSCertificate.InternalState",
    "module_download_ok": true,
    "module_extract_ok": true,
    "policy_convert_ok": true,
    "policy_download_ok": true,
    "policy_extract_ok": true,
    "policy_json_hash": null,
    "policy_pdf_hash": "9d1cf38d12a1e39d3be61ee6faa259c112e154b86e03fd34fd6b3d5689fd39fa",
    "policy_txt_hash": "8d949dbfc33e110ad216b76e71dd45281ff7b18aa45dc3fd6545a36f679bd859"
  },
  "web_data": {
    "_type": "sec_certs.sample.fips.FIPSCertificate.WebData",
    "caveat": "When operated in FIPS mode. No assurance of the minimum strength of generated keys.",
    "certificate_pdf_url": "https://csrc.nist.gov/CSRC/media/projects/cryptographic-module-validation-program/documents/certificates/November 2023_111223_0648_signed.pdf",
    "date_sunset": "2026-09-21",
    "description": "The Cr50 U2F Cryptographic Library is a firmware-hybrid module residing in the Google, LLC Google Security Chips (GSC) chip. The module is responsible for low-level cryptographic primitives on Google Security Chips (GSC) used in recent versions of Google Chromebooks, and includes functionality for key generation, signature generation, random bit generation, keyed-hashing and signature verification operations in support of U2F-related requests in the Cr50 Chrome OS.",
    "embodiment": "Single Chip",
    "exceptions": [
      "Physical Security: Level 3",
      "Mitigation of Other Attacks: N/A"
    ],
    "fw_versions": "1.0.1",
    "historical_reason": null,
    "hw_versions": "H1B2P",
    "level": 1,
    "mentioned_certs": {},
    "module_name": "Cr50 U2F Cryptographic Library",
    "module_type": "Firmware-Hybrid",
    "revoked_link": null,
    "revoked_reason": null,
    "standard": "FIPS 140-2",
    "status": "active",
    "sw_versions": null,
    "tested_conf": [
      "Google H1B2 with ARM V7-M with PAA"
    ],
    "validation_history": [
      {
        "_type": "sec_certs.sample.fips.FIPSCertificate.ValidationHistoryEntry",
        "date": "2023-11-06",
        "lab": "Acumen Security",
        "validation_type": "Initial"
      }
    ],
    "vendor": "Google, LLC",
    "vendor_url": "http://www.google.com"
  }
}