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base45-swift's Introduction

Simple base45 encoder/decoder

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About

Qr and Aztec code have a specific, highly efficient, method for storing alphanumeric characters (MODE 2/0010). In particular compared to UTF-8 (where the first 32 characters are essentially unused; and successive non-latin characters loose an additional 128 values as the topbit needs to be set).

Details of this 11 bits per two characters can be found at

For this reason - the industry generally encodes these in base45. A document for this defacto standard is in flight:

```https://datatracker.ietf.org/doc/draft-faltstrom-base45/```

version history v1.00 first version v1.01 27/5 Fix #5 / add guard for overflow is added. Credits @ArturFriesen

Licensing

Copyright (C) 2021 the eHealth implementors group and all other contributors

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License.

You may obtain a copy of the License at https://www.apache.org/licenses/LICENSE-2.0.

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the LICENSE for the specific language governing permissions and limitations under the License.

base45-swift's People

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asitdm avatar christianneu avatar dirkx avatar hannesvdb avatar stmitt avatar

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base45-swift's Issues

Semantic versioning

The current versioning is not a valid semantic version. The swift package manager only allows specifying versions which use the semantic versioning scheme and therefore the current latest release "1.01" is not usable.

Would it be possible to create a new release e.g. "1.0.1" which would allow us to specify the version in our package?

support Hexadecimal Input

In this project, only considered the implementation inputting normal ascii characters.

If an input data is hexadecimal ascii [00-FF], I think the result of encoded data will be shorter than now.

Is there any way to encoding the hexadecimal ascii string ?

Cocoapods release

In PR #3 a podspec file was added to this repository but the pod was never pushed to the trunk. Currently, only the fork by @HannesVDB is in the Cocoapods directory. Would it be possible to publish this repository directly?
We want to lower the deployment target of the admin-ch/CovidCertificate-SDK-iOS#74 to iOS 11 which is not satisfied by the fork of @HannesVDB.

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