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Remove CRC-24 dependency. Closes #3

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Frederic Jacobs
2016-04-02 11:00:52 +02:00
parent f1ad2b74f1
commit 16be20fcff
5 changed files with 18 additions and 73 deletions
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README.md
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@ -17,11 +17,11 @@ Passing a secret to secretshare for encoding:
```
$ echo My secret | ./secretshare -e2,5
2-1-1YAYwmOHqZ69jA-v+mz
2-2-YJZQDGm22Y77Gw-IhSh
2-3-+G9ovW9SAnUynQ-Elwi
2-4-F7rAjX3UOa53KA-b2vm
2-5-j0P4PHsw4lW+rg-XyNl
2-1-1YAYwmOHqZ69jA
2-2-YJZQDGm22Y77Gw
2-3-+G9ovW9SAnUynQ
2-4-F7rAjX3UOa53KA
2-5-j0P4PHsw4lW+rg
```
The parameters following the `-e` option tell `secretshare` to create 5 shares of which 2 will be necessary for decoding.
@ -29,7 +29,7 @@ The parameters following the `-e` option tell `secretshare` to create 5 shares o
Decoding a subset of shares (one share per line) can be done like this:
```
$ echo -e "2-2-YJZQDGm22Y77Gw-IhSh \n 2-4-F7rAjX3UOa53KA-b2vm" | ./secretshare -d
$ echo -e "2-2-YJZQDGm22Y77Gw \n 2-4-F7rAjX3UOa53KA" | ./secretshare -d
My secret
```
@ -62,9 +62,9 @@ The generated shares are lines of ASCII text.
# Structure of the shares
```
2-1-LiTyeXwEP71IUA-Qj6n
^ ^ ^^^^^^^^^^^^^^ ^^^^
K N D C
2-1-LiTyeXwEP71IUA
^ ^ ^^^^^^^^^^^^^^
K N D
```
A share is built out of three or four parts separated with a minus: K-N-D-C.
@ -73,10 +73,7 @@ how many distinct
shares of a specific secret are necessary to be able to recover the
secret. The number N identifies the share (ranging from 1 to the number
of shares that have been created). The D part is a Base64 encoding of
a specific share's raw data. The optional part C is a Base64 encoding
of a CRC-24 checksum of the concatenation of K and N as bytes followed
by the share's raw data (before Base64 encoding). The same checksum
algorithm is used in the OpenPGP format for “ASCII amoring”.
a specific share's raw data.
# A word on the secrecy