br-crypto

br-crypto is used at run time in 5 crates.

Depender (with downloads and own rev deps)			br-crypto version
500		br-email		^0.2.1
160		br-oss		^0.2
150		br-web		^0.2
140		br-wechat		^0.2
130		br-ocr		^0.2.0