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Definition
| different encryption keys generate the same ciphertext from the same plaintext message. |
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Definition
| encryption or decryption request is performed immediately. |
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| Encrypt/Decrypt requests are processed in queues. |
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| a one-way mathematical operation that reduces a message or data file into a smaller fixed length output, or hash value. |
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Definition
Variable data input (of any size) + hashing algorithm = fixed bit stream output (hash value)
* MD5 = 128 bits
* SHA1 = 160 bits. |
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Definition
| provide authentication of a sender and integrity of a sender's message. A message is input into a hash function. Then the hash value is encrypted using the private key of the sender. the result of these two steps yields a digital signature. |
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Term
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Definition
| a single key used to encrypt and to decrypt. |
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Definition
| two different but mathematically related keys are used where one key is used to decrypt |
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Definition
| used to identify the certificate holder when conducting electronic transactions - type of certificates currently used = x.509 v3 |
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| Certificate authority (CA): |
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Definition
| an entity trusted by one or more users as an authority in a network that issues, revokes, and manages digital certificates |
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| only issues certificates to Subordinate CA's |
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Definition
| issues certificates to users + computers on behalf of the Root CA |
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| Registration authority (RA): |
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Definition
| responsible for the accuracy of the information contained in a certificate request. The RA is also expected to perform user validation before issuing a certificate request |
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Term
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Definition
| This represents the entire cryptographic operation. This includes the algorithm, key, and key management functions |
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Term
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Definition
| The input that controls the operation of the cryptographic algorithm |
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Definition
| study of techniques for attempting to defeat cryptographic techniques and information security services |
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Definition
| the science that deals with hidden, disguised, or encrypted communications |
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Term
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Definition
| occurs when a hash function generates the same output for different inputs |
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Term
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Definition
| represents the total number of possible values of keys in a cryptographic algorithm or other security measure, such as a password |
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Definition
| the time and effort required to break a protective measure |
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