Base62
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The base62 encoding scheme uses 62 characters. The characters consist of the capital letters A-Z, the lower case letters a-z and the numbers 0–9. It is a binary-to-text encoding scheme that represents binary data in an ASCII string format.[1][2]
123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz = 58 characters = base58 0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz = 62 characters = base62 0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz+/ = 64 characters = base64
Base62 table
The Base62 index table:
Decimal | Binary | Base62 | Decimal | Binary | Base62 | Decimal | Binary | Base62 | Decimal | Binary | Base62 | |||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
0 | 000000 | 0 | 16 | 010000 | G | 32 | 100000 | W | 48 | 110000 | m | |||
1 | 000001 | 1 | 17 | 010001 | H | 33 | 100001 | X | 49 | 110001 | n | |||
2 | 000010 | 2 | 18 | 010010 | I | 34 | 100010 | Y | 50 | 110010 | o | |||
3 | 000011 | 3 | 19 | 010011 | J | 35 | 100011 | Z | 51 | 110011 | p | |||
4 | 000100 | 4 | 20 | 010100 | K | 36 | 100100 | a | 52 | 110100 | q | |||
5 | 000101 | 5 | 21 | 010101 | L | 37 | 100101 | b | 53 | 110101 | r | |||
6 | 000110 | 6 | 22 | 010110 | M | 38 | 100110 | c | 54 | 110110 | s | |||
7 | 000111 | 7 | 23 | 010111 | N | 39 | 100111 | d | 55 | 110111 | t | |||
8 | 001000 | 8 | 24 | 011000 | O | 40 | 101000 | e | 56 | 111000 | u | |||
9 | 001001 | 9 | 25 | 011001 | P | 41 | 101001 | f | 57 | 111001 | v | |||
10 | 001010 | A | 26 | 011010 | Q | 42 | 101010 | g | 58 | 111010 | w | |||
11 | 001011 | B | 27 | 011011 | R | 43 | 101011 | h | 59 | 111011 | x | |||
12 | 001100 | C | 28 | 011100 | S | 44 | 101100 | i | 60 | 111100 | y | |||
13 | 001101 | D | 29 | 011101 | T | 45 | 101101 | j | 61 | 111101 | z | |||
14 | 001110 | E | 30 | 011110 | U | 46 | 101110 | k | ||||||
15 | 001111 | F | 31 | 011111 | V | 47 | 101111 | l |
See also
References
- ^ Kejing He; Xiancheng Xu; Qiang Yue (November 19, 2008). "A secure, lossless, and compressed Base62 encoding". 2008 11th IEEE Singapore International Conference on Communication Systems. Institute of Electrical and Electronics Engineers. pp. 761–765. doi:10.1109/ICCS.2008.4737287. ISBN 978-1-4244-2423-8. S2CID 10831128. Retrieved 12 August 2020.
This base62 compressed encoding has been tested & The 62 alphanumeric characters (A-Z, a-z, 0–9)
- ^ Wu, Pei-Chi (June 18, 2001). "A base62 transformation format of ISO 10646 for multilingual identifiers". Software: Practice and Experience. 31 (12): 1125–1130. doi:10.1002/spe.408. S2CID 32472727. Retrieved August 13, 2020.
within a [0–9][A–Z][a–z] range, a total of 62 base characters