23 lines
1.0 KiB
Plaintext
23 lines
1.0 KiB
Plaintext
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Encryption algorithms are essential for protecting sensitive information and
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ensuring secure communications in a variety of domains. They are used for
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several important reasons:
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* Confidentiality, privacy, and intellectual property protection
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* Security during transmission or on storage devices
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* Data integrity, general trust, and authentication
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When selecting encryption algorithms, tools, or combinations, you should also
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consider two things:
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1. No encryption is unbreakable.
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2. The strength of an encryption algorithm is usually measured by the effort required to crack it within a reasonable time frame.
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In the mode Cipher Block Chaining (CBC), each block is used as
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cryptographic input for the next block. For this reason, the first block
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requires an initialization vector (IV), also called a "starting variable" (SV).
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If the same IV is used for multiple encryption sessions or messages, each new encryption of the same
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plaintext input would always produce the same ciphertext output. This may allow
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an attacker to detect patterns in the ciphertext.
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