有些需要变更审核、项目历史和其他像电子签名等严格的遵守确认。
Some have a need for auditability of changes, project history, and other strict compliance validation such as e-signatures.
通过诸如信息加密和数字签名等多种技术，SSL促进安全的电子商务通信和支付。
SSL helps secure e-commerce communications and payments through a variety of techniques such as message encryption and digital signatures.
该系统借助可信第三方技术、数字签名和加密等技术，确保电子交易的安全性和可靠性。
By use of the TTP, digital signature, encryption and decryption technologies, the system guaranteed the security and reliability of thee-business trade.
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