Question: What is password shadowing?
Answer: Password shadowing is a security system where the encrypted password field of /etc/passwd is replaced with a special token and the encrypted password is stored in a separate file (or files) which is not readable by normal system users
Secure file download in PHP, Security question PHP, PHP MYSQL Interview Question -Books download - PHP solutions guidelines queries update, phpmysqlquestion
Tuesday, November 4, 2008
what is substr_replace?
Question: what is substr_replace?
Answer: It is a function in php it takes four arguments and is used for substituting the a string
Answer: It is a function in php it takes four arguments and is used for substituting the a string
Difference between hashing and encryption?
Question: What is the difference between hashing and encryption?
Answer:
Encryption is a scheme where an intelligible text (plaintext in crypto terms) is made unintelligible (ciphertext in crypto terms) using a secure key. Block and stream ciphers and public key systems do this work. The security of the ciphers reside in the key length and decryption process is a difficult without proper knowledge of the key. But in hashing‚ they are one-way functions that compress arbitrary length strings into fixed short strings (message digests). Hash Functions can be designed using block ciphers using a secret key as a parameter along with the message that has to be hashed or with out them (dedicated hash functions MD4‚MD5‚SHA-1 etc..).
Encryption is a scheme where an intelligible text (plaintext in crypto terms) is made unintelligible (ciphertext in crypto terms) using a secure key. Block and stream ciphers and public key systems do this work. The security of the ciphers reside in the key length and decryption process is a difficult without proper knowledge of the key. But in hashing‚ they are one-way functions that compress arbitrary length strings into fixed short strings (message digests). Hash Functions can be designed using block ciphers using a secret key as a parameter along with the message that has to be hashed or with out them (dedicated hash functions MD4‚MD5‚SHA-1 etc..).
Subscribe to:
Posts (Atom)
security header validate
HTTP Security Headers Check Tool - Security Headers Response (serpworx.com)
-
QUESTION: 1 What is the output of the following code? echo '1' . (print '2') + 3; A. 123 B. 213 C. 142 D. 214 E. ...
-
Windows tool for creating a self-signed certificate. https://sourceforge.net/projects/portecle/ kindly install portecle tool from abov...
-
Which pillar of the AWS Well-Architected Framework recommends maintaining infrastructure as code? Operational Excellence Which of the foll...