Recover Encrypted String With Python - Passphrase, Salt, and Source Code Known-CodePudding

I have some source code in Kotlin that I only partially understand. I know a little bit of Python so I'm looking to recreate the decrypt function.

I have an encrypted string that I want to recover, and the original passphrase and salt too.

Here is the source (from here, with constants, encrypt function etc):

fun decrypt(passPhrase: String, salt: ByteArray, encryptedData: String): String? {
        val iv: ByteArray?
        val encrypted: ByteArray?
        return try {
            lastException = null
            val byteBuffer = ByteBuffer.wrap(Base64.decode(encryptedData))
            val ivLength = byteBuffer.get().toInt()
            iv = ByteArray(ivLength)
            byteBuffer[iv]
            encrypted = ByteArray(byteBuffer.remaining())
            byteBuffer[encrypted]
            val cipherDec: Cipher = Cipher.getInstance("AES/GCM/NoPadding")
            cipherDec.init(Cipher.DECRYPT_MODE, prepCipherKey(passPhrase, salt), GCMParameterSpec(TAG_LENGTH_BIT, iv))
            val dec = cipherDec.doFinal(encrypted)
            String(dec)
        } catch (e: Exception) {
            lastException = e
            aapsLogger.error("Decryption failed due to technical exception: $e")
            null
        }
    }

Here is my attempt simplified (I get incorrect padding when using the inputs I have):

def generate_key(password, salt, iterations):
    assert iterations > 0
    key = base64.b64decode(password   salt)
    for i in range(iterations):
        key = hashlib.sha256(key).digest()
    return key


def decrypt(ciphertext, password):
    salt = 'XXXXXXXetc'
    key = generate_key(password, salt, NUMBER_OF_ITERATIONS)
    cipher = AES.new(key, AES.MODE_GCM)
    plaintext = decrypt(ciphertext, cipher)
    return plaintext

Edit:

Here is some test data, with passphrase 1234

{
  "format": "aaps_encrypted",
  "metadata": {
    "device_name": "Galaxy S8 SE",
    "created_at": "2022-04-19T19:58:17.338Z",
    "aaps_version": "3.0.0.1",
    "aaps_flavour": "full",
    "device_model": "samsung SM-G950F (dreamlte)"
  },
  "security": {
    "file_hash": "96cf809f37eb46d0eb837511bae539b5fadd424e74d3e6eedaa4ceb2fdac07d8",
    "algorithm": "v1",
    "salt": "4030cc7f15e5f7bf830543270ced2b7c8b24237c53ce95382b232df69c594353",
    "content_hash": "197510b071e3e592c43301e77c997400048641e77275a02ebd41a58213e90c61"
  },
  "content": "DKQDMzcfTQdd59fKSN5s3pmcbs nK4fS6VUt0 sfWDolkrUqfq33HT82GOpUwCpCtHH0zwY2plw8ZEgv1a4I\/OjDQeueAyVL8NZUiNKWPdtUwSxbfiAuP6P61H1X9iGIAvhuvR uyy2l\/DNyWqIox2tvcNGXqt3og2mFojiqryB tKfia8dO7bpph\/8q3\/NGtJajijqTPNCcjLid8N0yivEXKSXaceL9qdGGZNoMGmIGMhrlrS8JBKOfRvFkE7hdat6D8uaF4iyxfuLGY210oDenf2V GcT5XBWv8nr1NKWaQTJOLx6A2QKZM\/9xKck0fl04PCFFz d0x Y3HgiecFrU3uCWKSL901OCUIlDdOiR7U1Ik1BJFfRzZMaB8qLU7uyc9SNzXs55u3Xm2yD14Fa44jhQKkXI\/DplqYl4M8wgSL7M2oCqNIMI4VpRpRF9apGRcdzVCjwnOWk3mBQkOUn\/etITu2kRMB8QZqvxXJtW40ZRjmqNXH7\/xWV jDr 3QnmdvqVl7YvityxfPmTTnJdQpUYvV8SbKR2kclidhZ9pTF14yndejNrZru5IE5D7a8vuiydkL6vcAchM9ts3MBv\/lg0Bu5y8H5 DCp8lwVBZDgPnjH1CpfNtk\/nYTJnlkkmRdjozZeqjrC8J\/ saRqizgXFqblVXY2A3Z0gF9iVjbGZywsabns1vUuYalqaXKW9U8sNZvs3S0\/ngRC25Rgo6AQdloqKr4PLeCEO18jq\/Vh Vky8MoAZXS\/xmCyFdAn EDLCdhKEYTA9Ynl pRTGAwtS9HLgNq36AohlKQm2vuRP1dchaelzL5tycHuNQq6zqUqh 4j0dw2vd7P8ZRvE3m5wNnOLC7lugpddxnbrwI\/j1Pu9aPlHHZWTy9dKW01IThVC9FWJqnhEhGao19FDXBEAjOUh70o2YIDb3d8oEDLMJX5Weaaoh9itMVLkafwmYx3YhqZqZ 38RykuL7x36aCksefL\/YtphPJkxwPgny2IDM6948uNUg3jUCem7ZwxHTWhgsIxI00PNo2D1ZWAOdk8HPy gRaJ\/rXsNvo0ErW2CD4gkKT8cvwkRJ2WH ovcVrcMFO1Ns7a8VdksjuMZhCWa8rzl6efRznT7FkXrKJSmUG5WkLQbPlSirMN2YK2R111qm7hbxvcTMFvGIh6ZZDHdDaaWMi7M3nHRT8AzlTiap1arnTCpSqtMVndB4Gu6i\/fNOFiV 3iXFfDUJsgvcGBDHsOQZ3lCdkHcCz5H1UB8D0tqqPHKt\/TAAwz\/Ew5axshAmiCuKqC EiTTHkHKd1e5uCF5kRXJWxlzlGNWYJmVZOkPfDpV0mX81Nc9RGgAKnzZ9v\/kHvzKsCjXyPbgzXBuYB FqaaP8CNNlyrKuTObqndUnCPIbIpBEtMf7auI2n5ME78KXd fPX1PvCYx3z4Z6FwZVBNtfTiIQgK4obNaPG40ysdcSGonKSDEVNEUDlZOZWTdNxGfXa5XfmsYN qw3v1 Sd2FDKjlP1BZPOmsCNEWXBrnqLsuoHnGv20che\/spEsS8aTQ4pWCerb4f7o13b303cTbSyQaC0AohH9UfjdXS19pkdHQySV2EXTLfcvfPPX E39aZG4BiKZ86jbmUQNjhgpoFupK9VUa7ZEEwQfhUOrTvZr zcwV0fJcD9FaaEcVLs1kez7TRhS\/p8rBUpSvoLa5KSEfquHbQq0WUr\/bSiX0hXVGY0h6MooZ8z\/HCFzzBHhHFZfRfsEbr1F9cJp7cn8MuqDuIH3GJ 6wW8JAb\/ftk\/BHMtfSvT\/TWxmldn Z5GQwGODJ5nGQTzsFmOJszSoVubVfuEJQ94SMHAB0tULDHhIFDknDgDjEY3VuNQ51ZC8nGas4XuohLTMeZ6cmJJmTnvPYDFb0RlbVrG7TVq7VaoZNIx9tTUhmAaSvbiiDc9pHGbiWAb5oe9dpGWjPDi5kayrckDjWkImy3jJLEV s9Dtz5R621 GzkQYw0KTKDEaqQtVkWXPP 8do2PyRn zh5MOpV7CxVKbjs19vR2gcC2DE9Ra\/naK cvKiwLnzmZEleBCCKsB5 9LJzHvhPrpbaFczKxDi\/A9LAwCFawGjsS6hF58tI2FpZoOw\/FacP1wb8V6sp97dCZjRH14ECMp24AuTfnmbwXmabT5\/zJUyDZoGCd7NONM0lOFBDFmKn kwo\/gyB5Sy\/YFFVEeTEfzL 49tPfphA\/SmbeyCop51ln8BeIOTTpdAwhSNpyU2YzUB845nN6I \/9QUO7ErkHBEhbAbwbVAiLev0dkw9J 2V4tZEMVzhoJrV5QjBiu wvGj0pBUhmSXOUhfyqnlp3XK6FU7M63MWzRlkZarW7FFHcGdhnArqQ9st\/ETdVXGpVR3ZGPxeh0C9ycjUpPKtRxEuNf93JGf99UPxou83zoL3sfEkxfWAbDB0eW2WoNZveuPaLwN3fGEgQaxglEXlM\/L9CaihvCZocseWHtpoBS1HjdHj7gGrRF\/DPOudS8dvu\/mWmK4IaUKIErYZoBnjopDmtpzqoNENjTNkhRvp3ojxg\/DgXsos3t7RxORC07T0SC\/SjUo6veEk5COlLENb49PozZbVIL6YECXp1xJxbf\/QCFiXosA S34ERwSwkJGYGhaPY42XJUODplYecy22FKjg2HN\/bvR213IQt9ctmZN5JB3wC8Fmyi5faxf2sl9VV3aM7ekpr3tyj7ATAvyRMl1UlnAz30ZO7GGhGhQbxYpe5SU20dpcVfC U3VQzrsGHW5f6OaI3GJpM5PVL98bK CfXEvC9acmPyH0AVHPWvYPEih81r2Ek4n2T6evtgrvixbRBGDTr24hB 27u29GEsZnqoL9vPx7xJeJ1WYYKYerVg t2GiVgEmn3XOFt3CkrSrp144HrWo0ZgAipTQ8BHVJ45r5WsojRLKrazpJMYLnFBSx4iokhtODb9dv0Tum wZ2zUIhsXDMBbAsjSDhJtrQLwuCoLzaz7o5BGinq9fIJks7uVZ5dUGe5dMJux8zNwujPVP9fuwsmmP6ObbGsG4MEhgyVoSpV39v8l7gyrulLp3D1fxbtNmZ9JolHFNtGTrkbouFjEnKn8B4iE4ofLGcuWGBnw\/zVSerFdMO8\/I4FaofLFQCLmx92s\/ROBXuycYJ4Isa4flJAwWK8SKIFpGWQg\/FfLkij611I 1i5m8wHX2XHcm5veA4ZcdcfhzqtywP8onLia0KZdZMrRRwa4oz6wumV3m56tyS\/zeEiPri9iqitZnlVwEtHCh\/jTQwfUykbMiidVficpqPGi5k8D0iUTJ5FtFSQkVOpK9KOX7CgO\/z6958d\/ZA9SJ1XZumuTBDfFmOwI3nkOIbThjGfvs7OlHyxP6K6k3Jkygt8bLUIshJHwLOPRlFlNhZLN9mcIYRhdVMJr0ZODLjdTLB94gLYUTffsLc27JHVeBEWWtDBr8IEc3Oq7cqPZpbSTM1\/5pjlxRXYIUIlgeAbUMeg\/yHof6NyPpzjO1bxhj1YM4qmnWL34f82eO\/3sim5GcT56hm5pkFeF2vKs JKbVNYwaMOYhcuQBCXT Ta hqCjColVQrJf9twy1k aGkJrMBaKelIYaWprKGennWL\/hVQwEgOR28426euRTHdgWPsQqe46hy1FabEjiWgRYsSiIwKHszpKXEyy760BvJqeJhRC4FFDooD8grnjuoDpnK8brUhlwWlmpPDSbm02eZSPxT54zBkti5u\/EONG2Dj3EtQ6jaQ29CvxVkIHPwapyTWBMO3d4dGJ0pfhYVHLwxtd02I8eVBU471jv57cU\/P4ypYGLMt3q14MMfKVTKqSbE0lM0mVt1wPgRTolIsAbRJYdDuwrQXxFM0mo1SXjkAwdoXxlYwBnLT6rsLwQpI0VrkESygdFjuWrc\/1IDbUkoy99nlC7YmQ9drvR6h7Jhol2LuQPche fnIy4rzx6XD6K1GFwa5Rii\/pBCvJ4AH9z3EwKhvL1Q0U1SjUiKTv69OSWfQKmjFLehtRrXx8odVFiYafxhfsskstPDkbdElT5SvLUOZOrqqdHq78LJuLC7GBRd1OPTG0VpokmSGNigRAwV ZvlY8D\/Xqlyc92FCnl9auQGsfwmcvcgiM74YcRTKFfH4sHmIPgWxBH3\/oX5S9fn40hOORHMpQwqpdD IvMiVS1dgKfThNT39JaMu441THkPH9ijYLJdlUv SVtiMqnk rZXgNsSeWSkhduGKs22wXceFM1CWIZtlvM6VL\/n8tHaOF0hk1F5GJ1kSbAG97YG8dRTU9XvcOzyStCYw1yDGH0Wo0V8iLyPefBNbueFpPcnkQ9sAt9fhDx v4XJ6X9Vq0iNvGbZQWo8wZghAOjMPNiopJUuL4hky4rXxrp0o5uCtNJSvmgs8FUUD8Wjn5\/9ZMA4EXNvmNBxSrpifiwWx Hrq9tUD22uFb\/8Y5BWHjSNUOeed1QG9upxKf6FXPohfDVd1Y7ECNh7J12yvrFkxo PiUDlyC47OKzc4NlYZMZLLA4udHln4aAXEnwRm6tmK0tKbbTWkjsgWrQChT\/Soxv4a\/vqjqvwLzm1grr2iaYSYAOMRDMwRse\/h9L913RKI9 IbmRfToxgTcrSqIhBDM99H PARRIBZtf75dEOn4yGBqEMyroPgR0mjs2dPslMOntIPYbLAUoAKydpc0FNbvmpmaX5n0N1dFB3UJZOFYKP A5nx8kYWsKhG nfjvMVPF7eFW7YksQfWqT8xka33ySfWhdPbtbyNWXJxKUCZSzzorc4qHQuo5GQCO3Tu\/V4TTfNENcxgE3VZDQ0qUPix4ShIx5WDn7uYtj8oP jWuqbwu blV45w\/u8\/yAbR5HWDfY5n3ce3yeqPlaX50jZ5iBWdY27LtYwy R79cgxL x\/hMMmftKoz1e5UL33JJ Aq clbjUSKkSK7lpuJDhCUb2MXi0jy2KkyHfP5vPcdcuqLCwc\/UPRrxjsYfIQDzryGHXbX2RoFPINnZU0uqOm2YuHz9 9zEX1ahpTKTx0y2j7OdsD2PBAJs1a8ip9j4Xx 7ZNM6Ngqvsm2cAjurtcp52yCkIuDOoVU6t5OBwCbm6SRQswT1oayjEgbUn\/Kn6 oXDrx9Vc4G\/hZk95kK1Ygu6Sh1PEeftTNXVfYkpfjRgb0UQDPpupDL83cEKC WhSp\/3S2sMo8tUtENPX9EXO nLEy6XZEA1FpalN6vT4ThMYUximQEGXb\/fYerhaC353Ht\/f5Dr56KGuwDPCSpL4yJJ6BloU2qgxwZiIHp8IM86k1bnMuCnY3KZltvPcXXJ6E5sDQB0Z1BLnnSnLKuAKeX6ulJ5noBkTzZe4rQwHF5cXNQx9pX6TFKxjSiu9qAB9fQYrm6Faj8FqbTVhACKSXHw7kj3DOeavgE28wyj9pO\/jfGfwV8sP3xOH1r4pM6CbuJavgXticH0X9ho6VyrRrsy74XZp1AI6FBHP6iIdA\/b7w7il8Vl7TsaZyf xbYtCM1hIcsgCUVo50tYG3CoL 5kOjfzViZnxlJZhEGqZssp \/kOb7Ty2ZoS0ZewjqRwOesRdEFM2ABy43qLuT7C1ulOJgYxKkAh4leb3vd0HYIXXTEkbfxrhHQ9j2dB3by6OyPbPgw8dVojeSAL\/7\/zaJoJdApKfeiV8BCHgsNdrdoVonOH4an0SD3YVuB5Yz81Z2C43WEJIUBITL\/RVnVLIGOxVmEWHD4FkwQPgmUS770Z8rqq2sZRUIGgYgKSeAGkslE4itJUQ \/LeFwbK3WYaVa8iT4Rd74goc7Dm39h54qZ6dgel0CqgvzAngw2NmTP3aETa\/Co eMwNyCLP QxGEzcnqgcs63YQyqrtG4pVhQg5cMkQbRpqsytHPjg2mS fBSAD1sXF5lrThlg6skL70o4H36abbAjOST\/ThvJ\/hViFb6lCD7w iXDuOa0 p3sn4yhgMIqcRwKjcIxx5GsGNNSJDKWWJn7zxdT525gwSh7rf\/aGVI9PNUhlXC0bdcHQ4UjIkqSa5MQbapiDDhg1PEqDlBa0v6vqSIdDAKaxWVZNYk0Msr3cNwaAYyQfdYVCrd6CN0bFIeOWOng6klQhTYxkhmrsogCXCsMLDFaBr\/IbfQSMfwtsYiM9Jtcn18QjfumXucfKL\/F0rP0D3FKOD72idANPCy 73lYAxGSDLVmT4wmsGCEcmAtrJHCauHn65T lSZ5d8LGFbU4P3fzP2i0 vDfPh74\/BOpx3rPgJ24chryugVZ3LRgCYrphkiiz7u cAAsUUmcb3\/9Oy8hRdqMYIW d8bvLygwdt\/5BjGALaF4l6kr BuC3Zdfm3VpNgSd0yneWc81sHJVY NTGGH6r0UEGlNOaXfv3EgCVKFIVVxQ7sdQZMlVsh\/st7NET6aPvEALHnfcC1LxmnBq4eDHNPD9Dkf2BPedenQM nl1kzvFAn3wmRknOkW5R1yNn\/ytxx0HGmmR8Ice5wgZ4O1iiu6gYQIgfNh7iqZa6f9 uRR7OPx3G3F3FqU494Fz966O311NQWt0v9OsZcTCjdHJacQQAlrhj6ueuAjvzwPEONSf9K2l6TNYcFqw8GzppCc10C R\/q72nSInBhsDSTw3uxgP acqC6vthAUi6ddQSsn1n8go5 hhZ\/ BG1253M3k646Lzf3auMRmIpsm7 S1ILBZ0yoDTTh4c2 MeN2WhTaoyX2aA2SN3uNtLVEKeiZS6abtkp1VnoMP0j2IXlCkP mii\/oqche0vGbbTphq2UUANX7KnHbbO1cOZs9kQW7JKmCzXIb9qvqF3agB8R8x  FlXXvzaE0uEX2OLHI5n\/jUgTEu jktNbX\/fXGZmPg T0Fcy10N1LGumnMIf4DZ3LQpBMosI\/Q7O1HfZslxjibux6HTQHMQq\/3rJ4COnsYgLhHveFY05pCAKJIX VXbW89zVgx\/7FMBse7XVNAxZM4s cIsPT8C4k12hqFoxBlMshjSOrF2IXLo3ha7jWl9 U4pK6wlCS3jxkIRjItzHss0Wsin9GuIAwsHo9mSpjVV88g93JOWNda7m9ClSSIBf6XVmcEVnWnRASOltW 8XKt66XviOlDQ9kc s5j9UVKrh4EJ5y1 aVitzn95F\/7YRZqwC3WKWLAnZcYkEw2Gowg9AUg5WCbpaKoWt\/BLP Rvklq eWl8B9IthFtiWVVNR j8yeJur\/5jwgrEqmRysRi2gFWhrEtA bnx9R1llfuYjHxxPjMjrtmPRwL5\/ixnEajtuXEURjd227mnRXXuj7sYPcEb2bR18PgE4YTCkSNPlKN7tEg03TLMSk5BGtNJ4vRbfuGCWDdza7AXu8jBlF7Iz4Fr1XXwRRH1Cd4p1L6ChT\/ODh1Co4nlsbj ttjX4g8KcHBeZJnpCySC3crd5gRRSgl1Q Ipj3Jn9RI04uSFYW 5ju9A3ssgn9Vc5IaxH  U2R4271sbTJ3hl95flFkPeqQLFBhl2BUs7MBzuaFnhzuD5aRiYln8bHzR0Xj2jGjUtTIenvf\/ooVaYMENUwkY8hu8BYJQe183rSy7Y6dSvRZLvU7pOak2u1X0j3eDXEcFqbMpoNtJUSpGy9X4SoqD4KOcbOlP6b0y63tfZ2Y tBQx\/MF7RbuMJQN sgD8iBltpJsYXgatTsvUw2l\/G197UjG3FrZDROIZgnFCY\/v4E4MUm8h2Vb7c7mU2WijpNMf2XL8Lk5533OltGoenaAU68qxrcSU2 xs\/tNcLql wwxNG1p7qC1lMRKzjfI88HdFIsaOmWPG62jzmkrZqeRp0Bp6ppeJu\/IFdmus2ELqrmewgk4GSk7cm4qK\/tE9xxYg0xD50exelnOuCzJyT5EyMa89pCHKKcr1M6rn90AD6fBq7AIRvb2GP44ADTNJrDG4ZjC e13Flp7cf5LLWByYxe\/ku4woR1g1DeJvWZnXOwuL5Z6OwmjM05MV9GvJIeIu0f469ameZlZp9n9EOE9qhqaS1hHqbLppPSnf5TEP5ElNjbv2jIWwPJbANa0CHFf1DqDM Lh95CYgZTPozesNUasWH6\/5drnxGhiJgqVTHM0aFFO4pEVfV49hltrzoxlOy3ZfDCDw\/qYfpN9Ej9Nw8M zjm4yWCbpjXuHa3BnZ2yBBT\/Tsb2rqrOWSffaRMVak80px9OhdW\/MSsYqIxu2F\/1l1QlzyksAQfZREfJ5mDYMGIyD2uVjK66asosDtx2qCy3vsVdatB7sT24yiZHAfh1XfWqIv6pkJNuVYCQQNMj7Yl3fhMcDKn4sKox1W\/1XPyGPYud rZuAVzYLXgDihHRVRy3FnOgIylhSAXyQrnS3kDFIFreD3yC\/vo98BHr\/53\/UgyJtVQEtqX2MKgZYx0qrCxGTqODZ2KL6t54bN9MTZP0kLD uwqFx1aPwudrNffCU7\/AVwte 4HjULcubQ3bsQcYYS9jDPo1upDYvvXmOlYj4dMCiO0Hvk1X1Wd6yS6Vz9SXFud3iHsfKdKcYMzSMTXX07tAnHBU0uYS5Cipbb3sKJHhmPouj EjNpWr6D6XwPKKL4J\/N5UzMWvjFXmeu7i7AzozgrMPhRrjyAv8hIDI9 4JiJpWQKbwWek0y4uUU9TnxvRqrvv5wgX HFMAm36UqfUzFFbfAiULEgKPIF8jDwVp3fzZyWRtZYpc8xDOLAqM2H rQOre7\/6LNHNwHdDceY4vQ9rJ16UB GwShFyHRmKqP2DPV7yJG11MOOAl6l1ugKGXWz22c3ulRowRP\/qBeBarbgY="
}

CodePudding user response：

When encrypting with the Kotlin code, the following data is concatenated at the end:

Size of the nonce
nonce
ciphertext/tag

When decrypting with the Python code, this data must be separated. Note that Kotlin/Java returns as ciphertext the concatenation of actual ciphertext and tag. These two parts must also be separated, since Python processes both separately.

In addition, PBKDF2 with HMAC/SHA1 is used as the key derivation in the Kotlin code. This algorithm must also be used for decryption with the Python code.

A possible implementation in Python is:

import base64
from Crypto.Hash import SHA1
from Crypto.Cipher import AES
from Crypto.Protocol.KDF import PBKDF2

AES_KEY_SIZE_BIT = 256
TAG_LENGTH_BIT = 128
PBKDF2_ITERATIONS = 50000 

def decrypt(passphrase, salt, ciphertext):

  # Separation
  ciphertextBytes = base64.b64decode(ciphertext)
  ivSize = int.from_bytes(ciphertextBytes[:1], "big")      
  iv = ciphertextBytes[1:1 ivSize]
  actualCiphertext = ciphertextBytes[1 ivSize:-TAG_LENGTH_BIT//8]
  tag = ciphertextBytes[-TAG_LENGTH_BIT//8:]

  # Key derivation
  key = PBKDF2(passphrase, salt, AES_KEY_SIZE_BIT//8, count=PBKDF2_ITERATIONS,  hmac_hash_module=SHA1)

  # Decryption
  cipher = AES.new(key, AES.MODE_GCM, nonce=iv)
  decrypted = cipher.decrypt_and_verify(actualCiphertext, tag)
  return decrypted

passphrase = "1234".encode('utf-8')
salt = bytes.fromhex("4030cc7f15e5f7bf830543270ced2b7c8b24237c53ce95382b232df69c594353")
ciphertext = "DKQDMzcfTQdd59fKSN5s3pmcbs nK4fS6VUt0 sfWDolkrUqfq33HT82GOpUwCpCtHH0zwY2plw8ZEgv1a4I/OjDQeueAyVL8NZUiNKWPdtUwSxbfiAuP6P61H1X9iGIAvhuvR uyy2l/DNyWqIox2tvcNGXqt3og2mFojiqryB tKfia8dO7bpph/8q3/NGtJajijqTPNCcjLid8N0yivEXKSXaceL9qdGGZNoMGmIGMhrlrS8JBKOfRvFkE7hdat6D8uaF4iyxfuLGY210oDenf2V GcT5XBWv8nr1NKWaQTJOLx6A2QKZM/9xKck0fl04PCFFz d0x Y3HgiecFrU3uCWKSL901OCUIlDdOiR7U1Ik1BJFfRzZMaB8qLU7uyc9SNzXs55u3Xm2yD14Fa44jhQKkXI/DplqYl4M8wgSL7M2oCqNIMI4VpRpRF9apGRcdzVCjwnOWk3mBQkOUn/etITu2kRMB8QZqvxXJtW40ZRjmqNXH7/xWV jDr 3QnmdvqVl7YvityxfPmTTnJdQpUYvV8SbKR2kclidhZ9pTF14yndejNrZru5IE5D7a8vuiydkL6vcAchM9ts3MBv/lg0Bu5y8H5 DCp8lwVBZDgPnjH1CpfNtk/nYTJnlkkmRdjozZeqjrC8J/ saRqizgXFqblVXY2A3Z0gF9iVjbGZywsabns1vUuYalqaXKW9U8sNZvs3S0/ngRC25Rgo6AQdloqKr4PLeCEO18jq/Vh Vky8MoAZXS/xmCyFdAn EDLCdhKEYTA9Ynl pRTGAwtS9HLgNq36AohlKQm2vuRP1dchaelzL5tycHuNQq6zqUqh 4j0dw2vd7P8ZRvE3m5wNnOLC7lugpddxnbrwI/j1Pu9aPlHHZWTy9dKW01IThVC9FWJqnhEhGao19FDXBEAjOUh70o2YIDb3d8oEDLMJX5Weaaoh9itMVLkafwmYx3YhqZqZ 38RykuL7x36aCksefL/YtphPJkxwPgny2IDM6948uNUg3jUCem7ZwxHTWhgsIxI00PNo2D1ZWAOdk8HPy gRaJ/rXsNvo0ErW2CD4gkKT8cvwkRJ2WH ovcVrcMFO1Ns7a8VdksjuMZhCWa8rzl6efRznT7FkXrKJSmUG5WkLQbPlSirMN2YK2R111qm7hbxvcTMFvGIh6ZZDHdDaaWMi7M3nHRT8AzlTiap1arnTCpSqtMVndB4Gu6i/fNOFiV 3iXFfDUJsgvcGBDHsOQZ3lCdkHcCz5H1UB8D0tqqPHKt/TAAwz/Ew5axshAmiCuKqC EiTTHkHKd1e5uCF5kRXJWxlzlGNWYJmVZOkPfDpV0mX81Nc9RGgAKnzZ9v/kHvzKsCjXyPbgzXBuYB FqaaP8CNNlyrKuTObqndUnCPIbIpBEtMf7auI2n5ME78KXd fPX1PvCYx3z4Z6FwZVBNtfTiIQgK4obNaPG40ysdcSGonKSDEVNEUDlZOZWTdNxGfXa5XfmsYN qw3v1 Sd2FDKjlP1BZPOmsCNEWXBrnqLsuoHnGv20che/spEsS8aTQ4pWCerb4f7o13b303cTbSyQaC0AohH9UfjdXS19pkdHQySV2EXTLfcvfPPX E39aZG4BiKZ86jbmUQNjhgpoFupK9VUa7ZEEwQfhUOrTvZr zcwV0fJcD9FaaEcVLs1kez7TRhS/p8rBUpSvoLa5KSEfquHbQq0WUr/bSiX0hXVGY0h6MooZ8z/HCFzzBHhHFZfRfsEbr1F9cJp7cn8MuqDuIH3GJ 6wW8JAb/ftk/BHMtfSvT/TWxmldn Z5GQwGODJ5nGQTzsFmOJszSoVubVfuEJQ94SMHAB0tULDHhIFDknDgDjEY3VuNQ51ZC8nGas4XuohLTMeZ6cmJJmTnvPYDFb0RlbVrG7TVq7VaoZNIx9tTUhmAaSvbiiDc9pHGbiWAb5oe9dpGWjPDi5kayrckDjWkImy3jJLEV s9Dtz5R621 GzkQYw0KTKDEaqQtVkWXPP 8do2PyRn zh5MOpV7CxVKbjs19vR2gcC2DE9Ra/naK cvKiwLnzmZEleBCCKsB5 9LJzHvhPrpbaFczKxDi/A9LAwCFawGjsS6hF58tI2FpZoOw/FacP1wb8V6sp97dCZjRH14ECMp24AuTfnmbwXmabT5/zJUyDZoGCd7NONM0lOFBDFmKn kwo/gyB5Sy/YFFVEeTEfzL 49tPfphA/SmbeyCop51ln8BeIOTTpdAwhSNpyU2YzUB845nN6I /9QUO7ErkHBEhbAbwbVAiLev0dkw9J 2V4tZEMVzhoJrV5QjBiu wvGj0pBUhmSXOUhfyqnlp3XK6FU7M63MWzRlkZarW7FFHcGdhnArqQ9st/ETdVXGpVR3ZGPxeh0C9ycjUpPKtRxEuNf93JGf99UPxou83zoL3sfEkxfWAbDB0eW2WoNZveuPaLwN3fGEgQaxglEXlM/L9CaihvCZocseWHtpoBS1HjdHj7gGrRF/DPOudS8dvu/mWmK4IaUKIErYZoBnjopDmtpzqoNENjTNkhRvp3ojxg/DgXsos3t7RxORC07T0SC/SjUo6veEk5COlLENb49PozZbVIL6YECXp1xJxbf/QCFiXosA S34ERwSwkJGYGhaPY42XJUODplYecy22FKjg2HN/bvR213IQt9ctmZN5JB3wC8Fmyi5faxf2sl9VV3aM7ekpr3tyj7ATAvyRMl1UlnAz30ZO7GGhGhQbxYpe5SU20dpcVfC U3VQzrsGHW5f6OaI3GJpM5PVL98bK CfXEvC9acmPyH0AVHPWvYPEih81r2Ek4n2T6evtgrvixbRBGDTr24hB 27u29GEsZnqoL9vPx7xJeJ1WYYKYerVg t2GiVgEmn3XOFt3CkrSrp144HrWo0ZgAipTQ8BHVJ45r5WsojRLKrazpJMYLnFBSx4iokhtODb9dv0Tum wZ2zUIhsXDMBbAsjSDhJtrQLwuCoLzaz7o5BGinq9fIJks7uVZ5dUGe5dMJux8zNwujPVP9fuwsmmP6ObbGsG4MEhgyVoSpV39v8l7gyrulLp3D1fxbtNmZ9JolHFNtGTrkbouFjEnKn8B4iE4ofLGcuWGBnw/zVSerFdMO8/I4FaofLFQCLmx92s/ROBXuycYJ4Isa4flJAwWK8SKIFpGWQg/FfLkij611I 1i5m8wHX2XHcm5veA4ZcdcfhzqtywP8onLia0KZdZMrRRwa4oz6wumV3m56tyS/zeEiPri9iqitZnlVwEtHCh/jTQwfUykbMiidVficpqPGi5k8D0iUTJ5FtFSQkVOpK9KOX7CgO/z6958d/ZA9SJ1XZumuTBDfFmOwI3nkOIbThjGfvs7OlHyxP6K6k3Jkygt8bLUIshJHwLOPRlFlNhZLN9mcIYRhdVMJr0ZODLjdTLB94gLYUTffsLc27JHVeBEWWtDBr8IEc3Oq7cqPZpbSTM1/5pjlxRXYIUIlgeAbUMeg/yHof6NyPpzjO1bxhj1YM4qmnWL34f82eO/3sim5GcT56hm5pkFeF2vKs JKbVNYwaMOYhcuQBCXT Ta hqCjColVQrJf9twy1k aGkJrMBaKelIYaWprKGennWL/hVQwEgOR28426euRTHdgWPsQqe46hy1FabEjiWgRYsSiIwKHszpKXEyy760BvJqeJhRC4FFDooD8grnjuoDpnK8brUhlwWlmpPDSbm02eZSPxT54zBkti5u/EONG2Dj3EtQ6jaQ29CvxVkIHPwapyTWBMO3d4dGJ0pfhYVHLwxtd02I8eVBU471jv57cU/P4ypYGLMt3q14MMfKVTKqSbE0lM0mVt1wPgRTolIsAbRJYdDuwrQXxFM0mo1SXjkAwdoXxlYwBnLT6rsLwQpI0VrkESygdFjuWrc/1IDbUkoy99nlC7YmQ9drvR6h7Jhol2LuQPche fnIy4rzx6XD6K1GFwa5Rii/pBCvJ4AH9z3EwKhvL1Q0U1SjUiKTv69OSWfQKmjFLehtRrXx8odVFiYafxhfsskstPDkbdElT5SvLUOZOrqqdHq78LJuLC7GBRd1OPTG0VpokmSGNigRAwV ZvlY8D/Xqlyc92FCnl9auQGsfwmcvcgiM74YcRTKFfH4sHmIPgWxBH3/oX5S9fn40hOORHMpQwqpdD IvMiVS1dgKfThNT39JaMu441THkPH9ijYLJdlUv SVtiMqnk rZXgNsSeWSkhduGKs22wXceFM1CWIZtlvM6VL/n8tHaOF0hk1F5GJ1kSbAG97YG8dRTU9XvcOzyStCYw1yDGH0Wo0V8iLyPefBNbueFpPcnkQ9sAt9fhDx v4XJ6X9Vq0iNvGbZQWo8wZghAOjMPNiopJUuL4hky4rXxrp0o5uCtNJSvmgs8FUUD8Wjn5/9ZMA4EXNvmNBxSrpifiwWx Hrq9tUD22uFb/8Y5BWHjSNUOeed1QG9upxKf6FXPohfDVd1Y7ECNh7J12yvrFkxo PiUDlyC47OKzc4NlYZMZLLA4udHln4aAXEnwRm6tmK0tKbbTWkjsgWrQChT/Soxv4a/vqjqvwLzm1grr2iaYSYAOMRDMwRse/h9L913RKI9 IbmRfToxgTcrSqIhBDM99H PARRIBZtf75dEOn4yGBqEMyroPgR0mjs2dPslMOntIPYbLAUoAKydpc0FNbvmpmaX5n0N1dFB3UJZOFYKP A5nx8kYWsKhG nfjvMVPF7eFW7YksQfWqT8xka33ySfWhdPbtbyNWXJxKUCZSzzorc4qHQuo5GQCO3Tu/V4TTfNENcxgE3VZDQ0qUPix4ShIx5WDn7uYtj8oP jWuqbwu blV45w/u8/yAbR5HWDfY5n3ce3yeqPlaX50jZ5iBWdY27LtYwy R79cgxL x/hMMmftKoz1e5UL33JJ Aq clbjUSKkSK7lpuJDhCUb2MXi0jy2KkyHfP5vPcdcuqLCwc/UPRrxjsYfIQDzryGHXbX2RoFPINnZU0uqOm2YuHz9 9zEX1ahpTKTx0y2j7OdsD2PBAJs1a8ip9j4Xx 7ZNM6Ngqvsm2cAjurtcp52yCkIuDOoVU6t5OBwCbm6SRQswT1oayjEgbUn/Kn6 oXDrx9Vc4G/hZk95kK1Ygu6Sh1PEeftTNXVfYkpfjRgb0UQDPpupDL83cEKC WhSp/3S2sMo8tUtENPX9EXO nLEy6XZEA1FpalN6vT4ThMYUximQEGXb/fYerhaC353Ht/f5Dr56KGuwDPCSpL4yJJ6BloU2qgxwZiIHp8IM86k1bnMuCnY3KZltvPcXXJ6E5sDQB0Z1BLnnSnLKuAKeX6ulJ5noBkTzZe4rQwHF5cXNQx9pX6TFKxjSiu9qAB9fQYrm6Faj8FqbTVhACKSXHw7kj3DOeavgE28wyj9pO/jfGfwV8sP3xOH1r4pM6CbuJavgXticH0X9ho6VyrRrsy74XZp1AI6FBHP6iIdA/b7w7il8Vl7TsaZyf xbYtCM1hIcsgCUVo50tYG3CoL 5kOjfzViZnxlJZhEGqZssp /kOb7Ty2ZoS0ZewjqRwOesRdEFM2ABy43qLuT7C1ulOJgYxKkAh4leb3vd0HYIXXTEkbfxrhHQ9j2dB3by6OyPbPgw8dVojeSAL/7/zaJoJdApKfeiV8BCHgsNdrdoVonOH4an0SD3YVuB5Yz81Z2C43WEJIUBITL/RVnVLIGOxVmEWHD4FkwQPgmUS770Z8rqq2sZRUIGgYgKSeAGkslE4itJUQ /LeFwbK3WYaVa8iT4Rd74goc7Dm39h54qZ6dgel0CqgvzAngw2NmTP3aETa/Co eMwNyCLP QxGEzcnqgcs63YQyqrtG4pVhQg5cMkQbRpqsytHPjg2mS fBSAD1sXF5lrThlg6skL70o4H36abbAjOST/ThvJ/hViFb6lCD7w iXDuOa0 p3sn4yhgMIqcRwKjcIxx5GsGNNSJDKWWJn7zxdT525gwSh7rf/aGVI9PNUhlXC0bdcHQ4UjIkqSa5MQbapiDDhg1PEqDlBa0v6vqSIdDAKaxWVZNYk0Msr3cNwaAYyQfdYVCrd6CN0bFIeOWOng6klQhTYxkhmrsogCXCsMLDFaBr/IbfQSMfwtsYiM9Jtcn18QjfumXucfKL/F0rP0D3FKOD72idANPCy 73lYAxGSDLVmT4wmsGCEcmAtrJHCauHn65T lSZ5d8LGFbU4P3fzP2i0 vDfPh74/BOpx3rPgJ24chryugVZ3LRgCYrphkiiz7u cAAsUUmcb3/9Oy8hRdqMYIW d8bvLygwdt/5BjGALaF4l6kr BuC3Zdfm3VpNgSd0yneWc81sHJVY NTGGH6r0UEGlNOaXfv3EgCVKFIVVxQ7sdQZMlVsh/st7NET6aPvEALHnfcC1LxmnBq4eDHNPD9Dkf2BPedenQM nl1kzvFAn3wmRknOkW5R1yNn/ytxx0HGmmR8Ice5wgZ4O1iiu6gYQIgfNh7iqZa6f9 uRR7OPx3G3F3FqU494Fz966O311NQWt0v9OsZcTCjdHJacQQAlrhj6ueuAjvzwPEONSf9K2l6TNYcFqw8GzppCc10C R/q72nSInBhsDSTw3uxgP acqC6vthAUi6ddQSsn1n8go5 hhZ/ BG1253M3k646Lzf3auMRmIpsm7 S1ILBZ0yoDTTh4c2 MeN2WhTaoyX2aA2SN3uNtLVEKeiZS6abtkp1VnoMP0j2IXlCkP mii/oqche0vGbbTphq2UUANX7KnHbbO1cOZs9kQW7JKmCzXIb9qvqF3agB8R8x  FlXXvzaE0uEX2OLHI5n/jUgTEu jktNbX/fXGZmPg T0Fcy10N1LGumnMIf4DZ3LQpBMosI/Q7O1HfZslxjibux6HTQHMQq/3rJ4COnsYgLhHveFY05pCAKJIX VXbW89zVgx/7FMBse7XVNAxZM4s cIsPT8C4k12hqFoxBlMshjSOrF2IXLo3ha7jWl9 U4pK6wlCS3jxkIRjItzHss0Wsin9GuIAwsHo9mSpjVV88g93JOWNda7m9ClSSIBf6XVmcEVnWnRASOltW 8XKt66XviOlDQ9kc s5j9UVKrh4EJ5y1 aVitzn95F/7YRZqwC3WKWLAnZcYkEw2Gowg9AUg5WCbpaKoWt/BLP Rvklq eWl8B9IthFtiWVVNR j8yeJur/5jwgrEqmRysRi2gFWhrEtA bnx9R1llfuYjHxxPjMjrtmPRwL5/ixnEajtuXEURjd227mnRXXuj7sYPcEb2bR18PgE4YTCkSNPlKN7tEg03TLMSk5BGtNJ4vRbfuGCWDdza7AXu8jBlF7Iz4Fr1XXwRRH1Cd4p1L6ChT/ODh1Co4nlsbj ttjX4g8KcHBeZJnpCySC3crd5gRRSgl1Q Ipj3Jn9RI04uSFYW 5ju9A3ssgn9Vc5IaxH  U2R4271sbTJ3hl95flFkPeqQLFBhl2BUs7MBzuaFnhzuD5aRiYln8bHzR0Xj2jGjUtTIenvf/ooVaYMENUwkY8hu8BYJQe183rSy7Y6dSvRZLvU7pOak2u1X0j3eDXEcFqbMpoNtJUSpGy9X4SoqD4KOcbOlP6b0y63tfZ2Y tBQx/MF7RbuMJQN sgD8iBltpJsYXgatTsvUw2l/G197UjG3FrZDROIZgnFCY/v4E4MUm8h2Vb7c7mU2WijpNMf2XL8Lk5533OltGoenaAU68qxrcSU2 xs/tNcLql wwxNG1p7qC1lMRKzjfI88HdFIsaOmWPG62jzmkrZqeRp0Bp6ppeJu/IFdmus2ELqrmewgk4GSk7cm4qK/tE9xxYg0xD50exelnOuCzJyT5EyMa89pCHKKcr1M6rn90AD6fBq7AIRvb2GP44ADTNJrDG4ZjC e13Flp7cf5LLWByYxe/ku4woR1g1DeJvWZnXOwuL5Z6OwmjM05MV9GvJIeIu0f469ameZlZp9n9EOE9qhqaS1hHqbLppPSnf5TEP5ElNjbv2jIWwPJbANa0CHFf1DqDM Lh95CYgZTPozesNUasWH6/5drnxGhiJgqVTHM0aFFO4pEVfV49hltrzoxlOy3ZfDCDw/qYfpN9Ej9Nw8M zjm4yWCbpjXuHa3BnZ2yBBT/Tsb2rqrOWSffaRMVak80px9OhdW/MSsYqIxu2F/1l1QlzyksAQfZREfJ5mDYMGIyD2uVjK66asosDtx2qCy3vsVdatB7sT24yiZHAfh1XfWqIv6pkJNuVYCQQNMj7Yl3fhMcDKn4sKox1W/1XPyGPYud rZuAVzYLXgDihHRVRy3FnOgIylhSAXyQrnS3kDFIFreD3yC/vo98BHr/53/UgyJtVQEtqX2MKgZYx0qrCxGTqODZ2KL6t54bN9MTZP0kLD uwqFx1aPwudrNffCU7/AVwte 4HjULcubQ3bsQcYYS9jDPo1upDYvvXmOlYj4dMCiO0Hvk1X1Wd6yS6Vz9SXFud3iHsfKdKcYMzSMTXX07tAnHBU0uYS5Cipbb3sKJHhmPouj EjNpWr6D6XwPKKL4J/N5UzMWvjFXmeu7i7AzozgrMPhRrjyAv8hIDI9 4JiJpWQKbwWek0y4uUU9TnxvRqrvv5wgX HFMAm36UqfUzFFbfAiULEgKPIF8jDwVp3fzZyWRtZYpc8xDOLAqM2H rQOre7/6LNHNwHdDceY4vQ9rJ16UB GwShFyHRmKqP2DPV7yJG11MOOAl6l1ugKGXWz22c3ulRowRP/qBeBarbgY="
print(decrypt(passphrase, salt, ciphertext).decode('utf-8')) # {"DisabledTo_basaltest":"0","DisabledTo_breadgrams":"0","DisabledTo_dia":"0","DisabledTo_exercise":"0","DisabledTo_exercise2":"0","DisabledTo_extendedcarbs":"0","DisabledTo_hypott":"0","DisabledTo_ic":"0","DisabledTo_insulin":"0","DisabledTo_iob":"0","DisabledTo_isf":"0","DisabledTo_noisycgm":"0","DisabledTo_nsclient":"0","DisabledTo_objectives":"0","DisabledTo_objectives2":"0","DisabledTo_otherMedicationWarning":"0","DisabledTo_prerequisites":"0","DisabledTo_prerequisites2":"0","DisabledTo_profileswitch":"0","DisabledTo_profileswitch2":"0","DisabledTo_profileswitch4":"0","DisabledTo_profileswitchtime":"0","DisabledTo_pumpdisconnect":"0","DisabledTo_sensitivity":"0","DisabledTo_troubleshooting":"0","DisabledTo_update":"0","DisabledTo_wrongcarbs":"0","DisabledTo_wronginsulin":"0","ExamTask_basaltest":"false","ExamTask_breadgrams":"false","ExamTask_dia":"false","ExamTask_exercise":"false","ExamTask_exercise2":"false","ExamTask_extendedcarbs":"false","ExamTask_hypott":"false","ExamTask_ic":"false","ExamTask_insulin":"false","ExamTask_iob":"false","ExamTask_isf":"false","ExamTask_noisycgm":"false","ExamTask_nsclient":"false","ExamTask_objectives":"false","ExamTask_objectives2":"false","ExamTask_otherMedicationWarning":"false","ExamTask_prerequisites":"false","ExamTask_prerequisites2":"false","ExamTask_profileswitch":"false","ExamTask_profileswitch2":"false","ExamTask_profileswitch4":"false","ExamTask_profileswitchtime":"false","ExamTask_pumpdisconnect":"false","ExamTask_sensitivity":"false","ExamTask_troubleshooting":"false","ExamTask_update":"false","ExamTask_wrongcarbs":"false","ExamTask_wronginsulin":"false","Monitor_MainActivity_resumed":"1650398254754","Monitor_MainActivity_start":"1650398048449","Monitor_MainActivity_total":"44111","Monitor_PreferencesActivity_resumed":"1650398069260","Monitor_PreferencesActivity_start":"1650398091955","Monitor_PreferencesActivity_total":"22695","Monitor_RequestDexcomPermissionActivity_resumed":"1650398253908","Monitor_RequestDexcomPermissionActivity_start":"1650398048510","Monitor_RequestDexcomPermissionActivity_total":"505","Monitor_SetupWizardActivity_resumed":"1650398049172","Monitor_SetupWizardActivity_start":"1650398061115","Monitor_SetupWizardActivity_total":"11943","Monitor_SingleFragmentActivity_resumed":"1650398286784","Monitor_SingleFragmentActivity_start":"1650398099736","Monitor_SingleFragmentActivity_total":"19515","ObjectivesActionsUsed":"true","Objectives_auto_accomplished":"0","Objectives_auto_started":"0","Objectives_autosens_accomplished":"0","Objectives_autosens_started":"0","Objectives_config_accomplished":"0","Objectives_config_started":"0","Objectives_exam_accomplished":"0","Objectives_exam_started":"0","Objectives_maxbasal_accomplished":"0","Objectives_maxbasal_started":"0","Objectives_maxiob_accomplished":"0","Objectives_maxiob_started":"0","Objectives_maxiobzero_accomplished":"0","Objectives_maxiobzero_started":"0","Objectives_openloop_accomplished":"0","Objectives_openloop_started":"0","Objectives_smb_accomplished":"0","Objectives_smb_started":"0","Objectives_usage_accomplished":"0","Objectives_usage_started":"0","absorption_cutoff":"6","activity_duration":"0","activity_target":"0","age":"adult","always_use_shortavg":"false","application_protection":"0","aps_mode":"open","autosens_max":"1.2","autosens_min":"0.7","bolus_protection":"0","boluswizard_percentage":"100","bt_watchdog":"false","carbsReqThreshold":"1","carbs_button_increment_1":"5","carbs_button_increment_2":"10","carbs_button_increment_3":"20","dexcom_lognssensorchange":"false","dexcomg5_nsupload":"false","dexcomg5_xdripupload":"false","eatingsoon_duration":"0","eatingsoon_target":"0","enableSMB_after_carbs":"false","enableSMB_always":"false","enableSMB_with_COB":"false","enableSMB_with_high_temptarget":"false","enableSMB_with_temptarget":"false","enable_carbs_required_alert_local":"true","enable_fabric2":"true","enable_missed_bg_readings":"false","enable_pump_unreachable_alert":"true","fill_button1":"0.3","fill_button2":"0","fill_button3":"0","gradually_increase_notification_volume":"false","high_mark":"0","high_temptarget_raises_sensitivity":"false","hypo_duration":"0","hypo_target":"0","insulin_button_increment_1":"0.5","insulin_button_increment_2":"1.0","insulin_button_increment_3":"2.0","keep_screen_on":"false","key_usersuperbolus":"false","language":"default","last_revoked_certs_check":"1650398043316","last_time_this_version_detected":"1650398061747","last_versionchecker_plugin_waring":"1650398048275","loop_openmode_min_change":"20","low_mark":"0","low_temptarget_lowers_sensitivity":"false","maintenance_logs_amount":"2","maintenance_logs_email":"[email protected]","master_password":"hmac:1067c3e86cb042d799eb25e9988280703563366195f38dee2d6f1f5cc05f57e6:7b29002999b3af7dd1e5fb0b2f3f4ea96ad90a410549bf0c6e34bc9ff5e5039c","missed_bg_readings_threshold":"30","nextMissedReadingsAlarm":"1650398347880","nextPumpDisconnectedAlarm":"1650398347880","ns_alarms":"false","ns_announcements":"false","openapsama_current_basal_safety_multiplier":"4","openapsama_max_daily_safety_multiplier":"3","openapsama_min_5m_carbimpact":"8.0","openapsama_useautosens":"false","openapsma_max_basal":"1","openapsmb_max_iob":"3","pump_unreachable_threshold":"30","raise_urgent_alarms_as_android_notification":"true","resistance_lowers_target":"false","sensitivity_raises_target":"true","settings_protection":"0","short_tabtitles":"false","show_calibration_button":"true","show_carbs_button":"true","show_cgm_button":"false","show_insulin_button":"true","show_notes_entry_dialogs":"false","show_statuslights":"true","show_treatment_button":"false","show_wizard_button":"true","smbinterval":"3","smbmaxminutes":"30","smscommunicator_otp_secret":"Qz12f1m7s5Tt8Q37ZB3FYFQS9ef1p3oxtYy t9oTQ90","startupwizard_processed":"true","statuslights_bage_critical":"240","statuslights_bage_warning":"216","statuslights_bat_critical":"5","statuslights_bat_warning":"25","statuslights_cage_critical":"72","statuslights_cage_warning":"48","statuslights_iage_critical":"144","statuslights_iage_warning":"72","statuslights_res_critical":"10","statuslights_res_warning":"80","statuslights_sage_critical":"240","statuslights_sage_warning":"216","statuslights_sbat_critical":"5","statuslights_sbat_warning":"25","treatmentssafety_maxbolus":"3","treatmentssafety_maxcarbs":"48","uamsmbmaxminutes":"30","units":"mg\/dl","use_bolus_advisor":"false","use_bolus_reminder":"false","use_smb":"false","use_uam":"false","virtualpump_type":"1","virtualpump_uploadstatus":"false"}

using the posted test data.

Note that the size of the nonce should be known on both sides so that the size doesn't need to be stored.
Also, for security reasons, the (non-secret) salt should be randomly generated like the nonce and passed to the decryption side concatenated, e.g. salt|nonce|ciphertext|tag.