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"OpenSSL" Signing Maria's CSR
This section provides a tutorial example on how to use 'OpenSSL' to sign a CSR (Certificate Signing Request) generated by 'keytool' with CA's private key. 2022-10-04, ∼199🔥, 0💬

DES Algorithm - Java Implementation in JDK JCE
This chapter provides tutorial examples and notes about DES algorithm implementation in the JDK JCE package. Topics include JCE classes related to DES; testing tutorial programs for DES encryption and decryption; PKCS5Padding schema to pad cleartext as 8-byte blocks. 2022-10-04, ∼220🔥, 0💬

CFB and OFB Stream Ciphers Implemented in JCE
This section describes how DES CFB and OFB (Output FeedBack) stream ciphers are implemented in the JDK JCE package. 2022-10-04, ∼220🔥, 0💬

Using MD5 Message Digest in PHP
This section provides a tutorial example on how to use MD5 message digest algorithm in PHP. The PHP engine has a built-in function md5(). 2022-10-04, ∼213🔥, 0💬

"openssl dsa" Viewing Private and Public Key Pair
This section provides a tutorial example on how to view a private and public key pair stored in PEM format using the 'openssl dsa' command. The key pair was originally generated by the 'keytool -genkeypair' command. 2022-10-04, ∼292🔥, 0💬

OFB (Output FeedBack) as a Stream Cipher
This section describes how DES OFB (Output FeedBack) operation mode can be modified as a 1-bit stream cipher or a 1-byte stream cipher. 2022-10-04, ∼310🔥, 0💬

Proof of DSA Digital Signature Algorithm
This section describes steps to prove DSA digital signature algorithm. Fermat's little theorem is the key part of the proof. 2022-10-04, ∼940🔥, 0💬

javax.crypto.Cipher - The Public Key Encryption Class
This section provides a quick introduction of the cipher class, javax.crypto.Cipher, to encrypt input data with a public key. 2022-10-04, ∼202🔥, 0💬

AES Key Schedule Algorithm
A quick description of the AES key schedule algorithm is provided. AES key schedule expands the given cipher key into 11 round keys. It uses round constants, S-box lookups and byte rotations. 2022-10-04, ∼608🔥, 0💬

"keytool -exportcert" Exporting PrivateKeyEntry
This section provides a tutorial example on how to export a 'PrivateKeyEntry' stored in a 'keystore' file using the 'keytool -exportcert' command. 2022-10-04, ∼493🔥, 0💬

No "keytool" Command to Export Keys
This section describes all sub-commands supported by the 'keytool' provided in JDK. There is not 'keytool' sub-command to export keys stored in 'keystore' files. 2022-10-04, ∼214🔥, 0💬

How to Calculate "M**e mod n"
This section discusses the difficulties of calculating 'M**e mod n'. The intermediate result of 'M**e' is too big for most programming languages. 2022-10-04, ∼393🔥, 0💬

Creating a Certificate Path with OpenSSL
This section provides a tutorial example on how to create multiple certificates to form a certificate path for testing purpose. 2022-10-04, ∼271🔥, 0💬

OpenSSL Validating Certificate Path
This chapter provides tutorial notes and example codes on certificate path validation with OpenSSL. Topics include introduction of certificate path; certificate path validation rules; generating and validating a certificate path. 2022-10-04, ∼355🔥, 0💬

Exporting Certificate from Chrome to File
This section provides a tutorial example on how to export the certificate provided by an 'https' Web site from Chrome to a file. 2022-10-04, ∼262🔥, 0💬

AES, or Rijndael, Encryption Algorithm
A quick description of the AES (Advanced Encryption Standard) encryption algorithm is provided. This description only covers AES encryption for a single block of 128-bit plaintext with a 128-bit cipher key. 2022-10-04, ∼392🔥, 0💬

Viewing Certificate Details
This section provides a tutorial example on how to view certificate details when visiting an 'https' Web site in Firefox. 2022-10-04, ∼327🔥, 0💬

Exporting Certificates Out of Firefox
This section provides a tutorial example on how to export a certificate from Firefox into a certificate file in DER and PEM formats. 2022-10-04, ∼616🔥, 0💬

"keytool -list" Verifying PKCS#12 Files
This section provides a tutorial example on how to merge a private key and its self-signed certificate into a single PKCS#12 file, with can be then encoded as PEM and encrypted with DES. 2022-10-04, ∼1940🔥, 0💬

"keytool -genkeypair" Generating PrivateKeyEntry
This section provides a tutorial example on how to generate a private and public key pair using the 'keytool -genkeypair' command. It stores the key pair in a 'PrivateKeyEntry' in a 'keystore' file. 2022-10-04, ∼502🔥, 0💬

"openssl genrsa" Generating Private Key
This section provides a tutorial example on how to generate a RSA private key with the 'openssl genrsa' command. The key file can be then converted to DER or PEM encoding with or without DES encryption. 2022-10-04, ∼822🔥, 0💬

"keytool -printcert" Printing Certificate Details
This section provides a tutorial example on how to print details of the certificate exported by 'keytool -exportcert' command using the 'keytool -printcert' command. 2022-10-04, ∼626🔥, 0💬

"keytool -importkeystore" Importing PKCS#12 Files
This section provides a tutorial example on how to import a private key stored in a PKCS#12 file into a JKS (Java KeyStore) file with the 'keytool -importkeystore' command. 2022-10-04, ∼751🔥, 0💬

Using MD5 Message Digest in Perl
This section provides a tutorial example on how to use MD5 message digest algorithm in Perl. John Allen implemented the entire MD5 algorithm in 8 lines of Perl 5 code. 2022-10-04, ∼200🔥, 0💬

<< < … 2 3 4 5 6 7 8 9 10 11 12 … > >>   ∑:342  Sort:Rank

Android ASP Astrology Big5 Bitcoin Blowfish Built-in C# Calendar CD-DVD Cheminformatics Chinese Cryptography DES Email Encoding Ethereum Flash GB2312 General H Herong History HTML Java JavaScript JDBC JSP JVM Linux Molecule Movie Music MySQL Neural Network Perl PHP Physics PKI Publication Python REST SOAP Sorting Swing TV Series UML Unicode VBScript Web Web-Services Windows WSDL XML XMLPad XSD XSL-FO