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Vigenère Cipher Online
Vigenère Cipher Tool: Online Encoder/Decoder with Key | Calctoolify What is the Vigenère Cipher? The Vigenère cipher is a polyalphabetic substitution cipher invented by Blaise de Vigenère in the 16th century. Unlike the Caesar cipher (which uses a fixed shift), it encrypts text using a keyword, making it more secure against basic attacks. This online…
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Hill Cipher Online Encoder & Decoder
Hill Cipher Tool: Online Encoder & Decoder with Matrix Encryption | Calctoolify What is the Hill Cipher? The Hill Cipher, invented by Lester S. Hill in 1929, is a polygraphic substitution cipher that uses linear algebra to encrypt/decrypt text. Unlike simpler ciphers (e.g., Caesar), it processes letters in blocks using a numeric key matrix. Note:…
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Playfair Cipher Online Encoder & Decoder
Playfair Cipher Tool: Encoder & Decoder Online (Free) | Calctoolify What is the Playfair Cipher? Invented by Charles Wheatstone in 1854 and popularized by Lord Playfair, this digraph substitution cipher encrypts pairs of letters (digraphs) using a 5×5 key matrix. It was used by militaries before modern cryptography. Note: This tool is for educational purposes…
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Rail Fence Cipher Online – Zigzag Cipher
Rail Fence Cipher (Zigzag) Tool: Encode & Decode Online | Calctoolify What is the Rail Fence Cipher? The Rail Fence Cipher is a transposition cipher used since ancient times. It arranges plaintext in a zigzag pattern across “rails” (rows) before reading it row-wise to create ciphertext. Note: This tool is for educational purposes only. The…
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One-Time Pad (Vernam Cipher) Encoder & Decoder Online
One-Time Pad (Vernam Cipher) Tool: Secure Encryption Online | Calctoolify What is the One-Time Pad? Invented in 1882 and later proven unbreakable by Claude Shannon in 1949, the One-Time Pad (OTP) is the only theoretically unbreakable cipher when implemented correctly. This tool demonstrates its principles using alphabetic characters. ⚠️ Critical Security Note: This web demo…
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Caesar Cipher Encoder & Decoder Online
Caesar Cipher Tool: Encode & Decode Online (Free) | Calctoolify Caesar Cipher Encoder & Decoder Online The Caesar Cipher is one of the oldest encryption techniques, used by Julius Caesar to protect military messages. This free online tool lets you encode/decode text using the Caesar Cipher method with customizable shift values. Perfect for learning cryptography…
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Prime Factorization Tool
Prime Factorization Tool | CalcToolify Find prime factors of any number with step-by-step solutions Prime factorization is the process of decomposing a composite number into a product of its prime factors. Every composite number can be expressed as a unique product of prime numbers. Enter a number to factorize: Factorize Number Prime Factorization Result Step-by-Step…
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GCD and LCM Calculator
GCD and LCM Calculator | CalcToolify Calculate GCD and LCM with step-by-step solutions GCD and LCM Calculator GCD Calculator LCM Calculator and Calculate GCD GCD Result and Calculate LCM LCM Result GCD Calculation Method The Greatest Common Divisor (GCD) is calculated using the Euclidean Algorithm: Example: GCD of 56 and 98 1. Divide 98 by…
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Modulo Calculator with Steps – Remainder Finder
Modulo Calculator with Steps | CalcToolify Easy-to-use modulo calculator with step-by-step solutions Modulo Calculator with Steps Calculate the remainder of a division operation (modulo) with detailed step-by-step explanations. The modulo operation finds the remainder after division of one number by another. Dividend (Number to be divided): Divisor (Number to divide by): Calculate Modulo Calculation Result…