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    • 7. 发明授权
    • System and method for enabling different grades of cryptography strength in a product
    • 在产品中实现不同等级的加密强度的系统和方法
    • US06308266B1
    • 2001-10-23
    • US09036002
    • 1998-03-04
    • Trevor W. Freeman
    • Trevor W. Freeman
    • G06F124
    • G06F21/121
    • A single cryptographically enhanced product is capable of exposing various strengths of cryptography. When first installed, the product exposes only a low-level, exportable strength cryptography that may be used in both the U.S. or overseas with a general export license. Stronger cryptography is implemented in the product, but is not exposed to the user. To enable the stronger cryptography, the user must obtain an authorization certificate issued from a certifying authority. The authorization certificate contains an identity of the certifying authority and a token granted by the product's provider. The token contains capabilities to expose the stronger cryptography in the product and an encoded ID of the certifying authority, which binds the token to a specific certifying authority. The cryptographic product evaluates the authorization certificate and token to verify that the certificate is from the certifying authority, the token is from the product provider, and the token contains the hash digest of the certifying authority. The product also determines whether the certificate or token has been revoked or has expired. If everything checks out, the product uses the capabilities included in the token to expose the higher strength cryptography to the user; otherwise, the product denies the request for higher strength cryptography and continues to use only the low strength cryptography.
    • 单一加密增强产品能够展现密码学的各种优势。 首次安装时,产品仅暴露出可在美国或海外使用的一般出口许可证的低级别可输出的强度加密技术。 在产品中实现更强大的密码学,但不会暴露给用户。 为了实现更强大的加密,用户必须获得从认证机构颁发的授权证书。 授权证书包含认证机构的身份和产品提供商授予的令牌。 该令牌包含在产品中公开更强的加密技术的能力,以及将令牌绑定到特定认证机构的认证机构的编码ID。 加密产品评估授权证书和令牌以验证证书是来自认证机构,令牌来自产品提供商,令牌包含认证机构的散列摘要。 产品还会确定证书或令牌是已被吊销还是已过期。 如果一切都清除,产品将使用令牌中包含的功能向用户展示更高强度的加密技术; 否则,产品拒绝对更高强度加密的请求,并且继续仅使用低强度加密。
    • 9. 发明授权
    • Credentials and digitally signed objects
    • 证书和数字签名对象
    • US07290138B2
    • 2007-10-30
    • US10368972
    • 2003-02-19
    • Trevor W. FreemanJohn J. Lambert
    • Trevor W. FreemanJohn J. Lambert
    • H04L29/00
    • H04L9/3247H04L2209/80
    • Object management is facilitated by signing objects with credentials and through noting and/or using an association between the signed objects and the signing credentials. In an exemplary method implementation, actions include: signing an object with a credential to produce a signed object and noting an association between an object identifier that represents the signed object and the credential. In another exemplary method implementation, actions include: receiving a revocation request for a signed object; accessing a database at an entry for the signed object to retrieve an associated credential, the associated credential having been used to sign an object to produce the signed object; and causing the associated credential to be revoked. In an exemplary electronically-accessible media implementation, a data structure thereof includes: at least one entry that associates a credential with an object identifier, the object identifier representing a signed object that was signed by the credential.
    • 通过使用凭据签名对象并通过注释和/或使用签名对象与签名凭据之间的关联来促进对象管理。 在示例性方法实现中,动作包括:用凭证签名对象以产生签名对象并注意表示签名对象的对象标识符与证书之间的关联。 在另一示例性方法实现中,动作包括:接收对签名对象的撤销请求; 在签名对象的条目处访问数据库以检索相关联的证书,所述相关联的证书已被用于对对象进行签名以产生签名对象; 并导致关联的凭证被撤销。 在示例性电子可访问媒体实现中,其数据结构包括:将证书与对象标识符相关联的至少一个条目,所述对象标识符表示由凭证签名的签名对象。