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Use initialization vectors once


The system should use initialization vectors, nonces and other single use numbers only once with a given encryption key.


The system's cryptographic keys are essential for maintaining the confidentiality and integrity of transactions and communications. Some encryption mechanisms use initialization vectors to reduce the chances that a message will be decrypted. These vectors should be generated using cryptographically secure random number generators and should only be used once with a given encryption key.

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This requirement is verified in following services




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