Security Tools
Inspect security-related data and explore password, certificate, token, and cryptography tools.
Cipher
View all 2- Playfair Cipher Decoder Decrypt even-length Playfair ciphertext using a 5×5 key square. Output preserves filler letters because removal is ambiguous without context.
- Playfair Cipher Encoder Encrypt letters with the classical 5×5 Playfair square, merging J into I and inserting X (or Q after X) between repeated digraph letters. This historical cipher is not secure.
Cryptography
View all 101- Acrostic First-Letter Extractor Extract the first Unicode code point of each nonempty ASCII-whitespace-delimited word, preserving its case.
- AD FGVX Cipher Tool Explicit AD FGVX caller-square coordinate substitution then stable keyed ragged column transposition. Classical educational encoding only; not secure encryption, no hidden normalization or inferred key.
- AD FGX Cipher Tool Explicit AD FGX caller-square coordinate substitution then stable keyed ragged column transposition. Classical educational encoding only; not secure encryption, no hidden normalization or inferred key.
Decode
View all 1Hash
View all 26- BLAKE-224 Hash Generator Calculate a 224-bit digest with the original SHA-3 finalist BLAKE algorithm, distinct from the later BLAKE2 and BLAKE3 designs.
- BLAKE-256 Hash Generator Calculate a 256-bit digest with the original SHA-3 finalist BLAKE algorithm, distinct from the later BLAKE2 and BLAKE3 designs.
- BLAKE-384 Hash Generator Calculate a 384-bit digest with the original SHA-3 finalist BLAKE algorithm, distinct from the later BLAKE2 and BLAKE3 designs.