The construction of a provable hash algorithm is developed based on the operations from various groups, also, a safety message authentication code is presented by the result.

本文利用来自不同群的运算，构造一种能证明其安全性的杂凑算法，并应用已证明的结果构造安全的消息认证码。

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Robert in Brazil had a similar message: "I'm a Safety Technician working on Petrobras Brazil.

VOA: special.2011.03.18

He added he wanted to help his rescuers to get the safety message across.

BBC: Fall man is 'lucky to be alive'

Meanwhile, there are already plans to release more personnel to drum home the fire safety message.

BBC: fire engine (generic)

The Scottish Youth Theatre will help deliver special workshops on the dangers of misusing the railway, while Young Scot will use social media to get the safety message across.

BBC: Network Rail scheme to highlight rail trespass dangers