🔆 Encryption

📍 What is Encryption?
✅ Process of scrambling data to make it unreadable to unauthorized parties
✅ Uses a cryptographic key – a set of mathematical values shared between sender and recipient

📍 Types of Encryption

🔹 Symmetric Encryption
✅ Uses a single shared key
✅ Same key for encryption and decryption

🔹 Asymmetric Encryption (Public Key Encryption)
✅ Uses two separate keys
➤ Public key – for encryption
➤ Private key – for decryption

📍 End-to-End Encryption (E2EE)**

✅ Ensures data shared between two devices remains confidential
✅ Prevents third parties (cloud providers, ISPs, cybercriminals) from intercepting data during transmission

📌 Examples:
✅ Messaging apps – WhatsApp, Signal, Telegram
✅ Email services supporting E2EE
✅ VPNs securing internet traffic

📍 How It Works

🔹 Cryptographic Keys
✅ Unique keys generated and stored on sender’s & recipient’s devices

🔹 Encryption
✅ Data converted into unreadable form using complex algorithms

🔹 Decryption
✅ Only devices with the correct key can decode the data

#Science_Technology

🔆 Global Methane Status Report 2025 — Key Facts

📍 Introduction
The UNEP–CCAC report reviews global progress on methane reduction.

📍 Key Highlights
✅ Methane concentrations doubled since pre-industrial era; reached 352 Mt/year (2020); projected to rise 5% by 2030.
✅ Rising methane may cause 24,000 extra premature deaths & 2.5 Mt crop losses annually by 2030.
✅ India = 3rd-largest emitter (~31 Mt/year), mainly from stubble burning, rice cultivation, and livestock.

📍 Global Initiatives
✅ Global Methane Pledge (GMP) — cut methane 30% from 2020 levels by 2030 (India not a signatory).
• Launched at COP26 (2021) by CCAC & partners.
✅ International Methane Emissions Observatory (IMEO) — UNEP-led platform for tracking methane sources globally.

📍 India’s Measures
✅ National Mission on Sustainable Agriculture (NMSA).
✅ Methane mitigation technologies in agriculture:
• System of Rice Intensification (SRI)
• Direct Seeded Rice (DSR) — avoids continuous flooding
• Crop Diversification Programme

#environment

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The Union Ministry of Home Affairs (MHA) has released India’s first-ever anti-terror policy - PRAHAAR

🔆 Mandya Inscription Highlights Hoysala–Tamil Connections

An inscription engraved on a slab at the Sri Mahalakshmi Temple (Mandya, Karnataka) sheds fresh light on 12th-century socio-cultural ties, highlighting strong Hoysala–Tamil connections in the Kaveri basin.

📍 About Hoysala Dynasty (10th–14th Century)
✅ Region: Southern Deccan
& Kaveri (Cauvery) River valley
✅ Initial Capital: Belur → Later shifted to Halebidu (Dwarasamudra/Dorasamudra)
✅ Founder: Nripa Kama II (initially feudatory of Western Gangas)

📍 Administration
✅ Divided into: Nadus → Kampanas → Vishayas → Deshas (descending order)

📍 Sacred Ensembles of the Hoysalas (UNESCO WHS)
✅ Declared as the 42nd UNESCO World Heritage Site
✅ Includes:
• Chennakeshava Temple (Belur)
• Hoysaleshwara Temple (Halebidu)
• Keshava Temple (Somanathapur)

📍 Hoysala Architecture Style
✅ Style: Vesara (Hybrid of Dravidian + Nagara)
▪ Strong influence of Bhumija shikhara (North Indian variety)
✅ Plan: Stellate (Star-shaped) plan
▪ Built on raised platform (Adhisthana)
✅ Material: Soapstone (soft, ideal for intricate carving)
✅ Shrine Types:
• Ekakuta (1 sanctum)
• Dvikuta (2 sanctums)
• Trikuta (3 sanctums)
• Rare Panchakuta (5 shrines)

#prelims
#art_and_culture

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🔆 AI Impact Summit 2026 – New Delhi Declaration Adopted

The AI Impact Summit 2026 concluded with the adoption of the New Delhi Declaration, marking a major step toward a coordinated global framework on responsible and inclusive Artificial Intelligence.

📍 About the Declaration
✅ Endorsed by: 87 countries and 2 international organisations — European Union (EU) & International Fund for Agricultural Development (IFAD)

✅ Guiding Principle: “Sarvajan Hitaya, Sarvajan Sukhaya”
▪ Emphasises inclusive, human-centric and welfare-oriented AI governance

✅ Structure:
▪ Built around 7 key pillars
▪ Accompanied by voluntary, collaborative global initiatives

📍 Significance
✅ Promotes global cooperation in AI development
✅ Encourages ethical, safe and inclusive AI deployment
✅ Strengthens the vision of AI for public good

#GS3
#prelims
#science_technology
#science_and_technology

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#Goodmorning 

⏳89 days  left CSP26[ 24-05-26]
⏳178 days left CSM26 [ 21-08-26]

⏳285 days left UPPSC prelims 6 December
⏳152 days left 72nd BPSC PRELIMS 26 July
⏳145 days left CAPF AC 19 July
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⏳104 days Left OPSC prelims 07 June
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⏳97 days  left MPSC (MH) prelims [ 31-05-26]
⏳RAS PRELIMS may
⏳61 days Left MPPSC (MP) Prelims 26 April
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⏳60 days Left bpsc mains 25 April
⏳47 days Left CDS1 /NDA 12 April
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⏳32 days left UPPSC mains 29 March
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#Target
#TargetOnlyone
#Accountability

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🔆 Foreign Travellers & Their Observations (Ancient–Medieval India)

📍 Megasthenes
✅ Nationality: Greek (Ambassador of Seleucus Nicator)
✅ Period: 302–298 BCE
✅ Ruler: Chandragupta Maurya
✅ Work: Indica

📍 Deimachos
✅ Nationality: Greek Ambassador
✅ Period: 320–273 BCE
✅ Ruler: Bindusara

📍 Fa-Hien
✅ Nationality: Chinese Traveller
✅ Period: 405–411 CE
✅ Ruler: Chandragupta II
✅ Work: Fo-Kyo-Ki (Records of Buddhist Kingdoms)
▪ Described Pataliputra
▪ Mentioned Hinayana & Mahayana sects

📍 Hiuen Tsang (Xuanzang)
✅ Nationality: Chinese Traveller
✅ Period: 630–645 CE
✅ Ruler: Harshavardhana
✅ Work: Si-Yu-Ki (Travel to the Western World)
▪ Studied ~5 years at Nalanda
▪ Detailed account of Harsha’s reign

📍 I-Tsing
✅ Nationality: Chinese Traveller
✅ Period: 671–695 CE
✅ Recorded 25 years of travels
▪ Gave information about Srivijaya & other kingdoms

📍 Al-Masudi
✅ Nationality: Arab Traveller
✅ Period: 957 CE
✅ Work: Muruj-ul-Zahab
▪ Extensive account of India

📍 Al-Biruni
✅ Nationality: Persian Scholar
✅ Period: 1024–1030 CE
✅ Work: Tahqiq-i-Hind / Kitab-ul-Hind
▪ Explained Indian society & caste system

📍 Marco Polo
✅ Nationality: Italian Traveller
✅ Period: 1292–1294 CE
✅ Visited during: Rudramadevi (Kakatiya rule)
✅ Work: The Book of Sir Marco Polo
▪ Account of India’s economic life

📍 Ibn Batuta
✅ Nationality: Moroccan Traveller
✅ Period: 1333–1347 CE
✅ Ruler: Muhammad-bin-Tughlaq
✅ Work: Rihla
▪ Described postal system (Horse & Dawa post)
▪ Mentioned insecurity, robbery, coconut & paan

📍 Nicolo Conti
✅ Nationality: Italian Merchant
✅ Period: 1420–1421 CE
✅ Ruler: Devaraya I (Vijayanagar)
▪ Described Vijayanagar
▪ Called Telugu “Italian of the East”

📍 Abdur Razzaq Samarqandi
✅ Nationality: Persian Scholar & Ambassador (Shahrukh of Timurid dynasty)
✅ Period: 1443–1444 CE
✅ Ruler: Devaraya II (Vijayanagar)
▪ Stayed at Zamorin’s court (Calicut)
▪ Work: Matla-us-Sadain wa Majma-ul-Bahrain

#history #prelims #mains

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🔆 Kuchipudi (Classical Dance of Andhra Pradesh)

📍 Origin & Background
✅ Originated from Kuchelapuram (Kuchipudi village) in Krishna district, Andhra Pradesh
✅ Emerged as a product of the Bhakti movement (7th century CE onwards)
✅ Originally known as Kuchelapuri / Kuchelapuram
✅ Known for graceful movements and a strong narrative–dramatic tradition
✅ Stylistically positioned between Bharatanatyam and Odissi

📍 Nature of the Dance Form
✅ Classical dance-drama tradition
✅ Integrates speech, mime (abhinaya), and pure dance
✅ Traditionally group-based, now widely performed as solo recital

📍 Style & Technique
✅ Based on the classical triad:
• Nritta – Pure dance (teermanams, jatis)
• Nritya – Expressive dance (sabdam)
• Natya – Dramatic enactment using mudras & abhinaya
✅ Strong emphasis on abhinaya (expression) and rhythmic vitality
✅ Incorporates both Lasya (grace) and Tandava (vigour) elements

📍 Music & Instruments
✅ Music system: Carnatic music
✅ Major accompanying instruments:
• Mridangam
• Manjira (Talam)
• Veena
• Violin
• Kanjira
• Surpeti
• Venu (Flute)
• Tanpura

📍 Sequence of a Kuchipudi Recital
✅ Ganesha Vandana – Invocatory item
✅ Nritta – Abstract dance (usually Jatiswaram)
✅ Shabdam – Narrative dance
• Famous items: Dashavatara Shabdam, Manduk Shabdam
✅ Kalaapam – Natya (dramatic piece)
✅ Tarangam – Grand finale
• Dancer performs on a brass plate, moving it rhythmically with feet

📍 Unique Elements
✅ Tarangam – Balancing and dancing on a brass plate
✅ Jala Chitra Nrityam – Drawing pictures on the floor using toes while dancing
✅ Combines aesthetic beauty with storytelling

📍 Famous Exponents
✅ Radha Reddy & Raja Reddy
✅ Yamini Krishnamurthy
✅ Indrani Rehman
✅ Vedan­tam Satyanarayana Sharma

#prelims
#art_and_culture

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UPPCS Mains 2025 Schedule

Keralam

Kalibangan: Indus Valley Civilization Ka Anokha Shehar

https://youtube.com/watch?v=gjjqR5SwQf8&si=fpgkRUy4ITDjMPiG

IFoS mains result’s declared.

🔆 Prime Minister Street Vendor’s Atma Nirbhar Nidhi (PM SVANidhi)

📍 Context
✅ Prime Minister launched the PM SVANidhi Credit Card to deepen financial inclusion of street vendors and strengthen their access to formal credit.

📍 PM SVANidhi Credit Card
✅ Eligibility:
• Street vendors who have successfully repaid the 2nd tranche loan
• Eligible for the 3rd tranche under PM SVANidhi

✅ Credit Limit:
• ₹30,000 RuPay retail (personal) credit card

✅ Key Feature:
• Revolving credit facility → flexible usage & timely liquidity for daily business needs

📍 About PM SVANidhi Scheme
✅ Launch: 2020
✅ Type: Central Sector Scheme

✅ Objective:
• Provide affordable working capital loans to street vendors
• Enable livelihood recovery post COVID-19 lockdowns

📍 Implementation Framework
✅ Jointly implemented by:
• Ministry of Housing and Urban Affairs (MoHUA)
• Department of Financial Services (DFS)

📍 Significance
✅ Promotes financial inclusion of urban informal sector
✅ Encourages credit discipline through tranche-linked incentives
✅ Supports Atmanirbhar Bharat by empowering micro-entrepreneurs

#goverment_schemes

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🔆 CURRENT AFFAIRS – 23 FEB 2026

🔆 REGULATORY BODIES

📍 RBI Secured Data Centre – Odisha
✅ RBI sets up high-security greenfield data centre in Bhubaneswar
✅ Located away from cross-border threats & high seismic-risk zones
✅ Hosts: Currency systems, Payment & settlement ops, Regulatory data
✅ RBI piloting domestic cloud facility (Mumbai & Hyderabad)
✅ SEBI & SBI also building dedicated data centres

🔆 BANKING & FINANCE

📍 World Bank MIGA – Solar Push
✅ MIGA issues USD 197.67 million guarantee to Citibank
✅ Supports SBI’s Grid-connected Rooftop Solar (GRPV) refinancing
✅ GRPV launched: 2016 | Initially backed by USD 500 mn IBRD loan

📍 Merchandise Trade Indices – Base Year Revised
✅ Base year changed to 2022–23 (from 2012–13)
✅ Revised by DGCI&S (MoC&I)
✅ Used by MoSPI (NAD) for GDP deflators

📍 UPI Global Expansion
✅ FY26 (till Dec): 1.48 million cross-border transactions
✅ Value: ₹330.43 crore
✅ Live in 8 countries incl. France, UAE, Singapore, Nepal

🔆 INTERNATIONAL

📍 Global AI Brain Race 2026
✅ Rank 1: USA (82/100)
✅ Rank 2: China | Rank 3: Singapore
✅ India Rank: 6 (Score: 32/100)

📍 India–Brazil Trade Target
✅ Bilateral trade target raised to USD 30 billion by 2030
✅ Focus: Energy, Space, Agriculture, Healthcare

📍 Bangladesh – 89th Signatory
✅ Endorses New Delhi Declaration on AI Impact
✅ Based on principle: Sarvajan Hitaya, Sarvajan Sukhaya

🔆 NATIONAL

📍 Export Promotion Mission – 7 New Interventions
✅ Launched by Piyush Goyal
📌 Key Schemes:
➡ TRACE – 60–75% reimbursement (₹25 lakh ceiling)
➡ FLOW – 30% overseas warehouse support
➡ LIFT – 30% freight reimbursement
➡ INSIGHT – Trade intelligence & DEH strengthening

📍 MoMA ‘Chintan Shivir’ – Nalanda
✅ Launches NIGRANI App (PMJVK)
✅ AI Chatbots & Haj Smart Wrist Band

📍 50 Years – Bonded Labour Act (1976)
✅ Came into force: 9 Feb 1976
✅ Abolished bonded labour & cancelled bonded debts

📍 Indigenous Td Vaccine – CRI Kasauli
✅ Launched by J.P. Nadda
✅ Replaces TT vaccine
✅ 55 lakh doses by April 2026

📍 Indian Railways – AI Integration
✅ AI-enabled apps: RailMadad, RailOne, Coach Mitra
✅ AI for crowd management & predictive maintenance

📍 Namo Bharat RRTS – Delhi–Meerut
✅ Length: 82 km | Speed: 180 km/h
✅ India’s first Regional Rapid Transit System (RRTS)

📍 Skill India Digital Hub (SIDH)
✅ Campaign: “Badhna Hai Toh Yahan Judna Hai”
✅ 1.5 crore+ registered candidates
✅ AI-personalised learning | 21+ languages

📍 Quantum & AI University – Amaravati
✅ NIELIT to establish India’s first dedicated Quantum & AI campus

📍 Palamu Tiger Reserve – ‘Vanjeevi Didi’ Initiative
✅ 18 women each from 17 villages
✅ Promote anti-poaching & forest conservation

🔆 DEFENCE

📍 Strela-10 Missile Test – Pokhran
✅ Conducted by IA’s Konark Corps
✅ VSHORADS | Range: 6–10 km

🔆 MoUs

📍 Gujarat – L&T Vyoma
✅ ₹25,000 crore investment
✅ 250 MW Green AI Data Centre – Dholera SIR

📍 India–Brazil Postal MoU
✅ 5-year agreement
✅ Focus: IT sharing, capacity building

🔆 STATES

📍 Waaree Energies – AP Gigafactory
✅ ₹8,175 crore investment
✅ Capacity: 16 GWh Lithium-ion battery plant

📍 Bihar – Greenfield Airport (Sonpur)
✅ ₹1,302 crore for land acquisition
✅ India’s 24th Greenfield Airport

📍 MP – Divyangjan Cricket Festival 2026
✅ 350 players | 25 states
✅ 100-hour continuous cricket

🔆 IMPORTANT DAYS

📍 21 Feb – International Mother Language Day
✅ Theme 2026: Youth voices on multilingual education

📍 21 Feb – World Pangolin Day
✅ 15th observance in 2026

🔆 APPOINTMENTS

✅ Harsharan Kaur Trehan – First Woman Director (Commercial), PSPCL
✅ Asha Sharma – CEO, Microsoft Gaming

🔆 AWARDS

📍 BAFTA 2026
✅ Best Film: One Battle After Another
✅ Indian film Boong wins Best Children’s & Family Film

📍 Vasai Cathedral – UNESCO Award
✅ Award of Merit (Asia-Pacific Heritage Conservation)

🔆 SPORTS

📍 Winter Olympics 2026
✅ Norway wins 17 Gold medals (record)
✅ Johannes Dale-Skjevdal – Gold (Men’s 15 km Biathlon)

#CurrentAffairs

#Goodmorning 

⏳88 days  left CSP26[ 24-05-26]
⏳177 days left CSM26 [ 21-08-26]

⏳284 days left UPPSC prelims 6 December
⏳151 days left 72nd BPSC PRELIMS 26 July
⏳144 days left CAPF AC 19 July
⏳130 days left UKPSC PRELIMS 5 July
⏳103 days Left OPSC prelims 07 June
⏳103 days Left GPSC prelims 07 June
⏳96 days  left MPSC (MH) prelims [ 31-05-26]
⏳RAS PRELIMS may
⏳60 days Left MPPSC (MP) Prelims 26 April
⏳60 days Left HCS Prelims 26 April
⏳59 days Left bpsc mains 25 April
⏳46 days Left CDS1 /NDA 12 April
⏳34 days Left PPSC mains 1 April
⏳31 days left UPPSC mains 29 March
⏳19 days Left JPSC PRELIMS 15 March

#Target
#TargetOnlyone
#Accountability

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🔆 Viral Diseases – Quick Revision

📍 Mosquito-borne
✅ Dengue
• Agent: Dengue virus (RNA)
• Vector: Aedes aegypti / A. albopictus
• Vaccine: ❌ (Not approved in India)

✅ Chikungunya (UPSC 2013)
• Agent: Chikungunya virus (RNA)
• Vector: Aedes mosquitoes
• Vaccine: ❌

✅ Zika
• Agent: Zika virus (RNA)
• Vector: Aedes mosquitoes
• Vaccine: ❌

📍 Fecal–oral / Water-borne
✅ Poliomyelitis
• Agent: Poliovirus (RNA)
• Transmission: Fecal–oral, contaminated water/food
• Vaccine: IPV, OPV

📍 Blood / Body fluids
✅ AIDS (HIV) (UPSC 2013, 2019)
• Agent: HIV (RNA)
• Transmission: Body fluids (excluding saliva)
• Treatment: ART (Lamivudine, Zidovudine, Cabotegravir, etc.)

✅ Hepatitis
• A & E: Contaminated food/water
• B, C, D, G: Blood/body fluids
• Virus type: All RNA except Hep B (DNA)
• Vaccine: HAV, HBV (HBV also protects against D)
• ❌ No vaccine: Hep C, G

📍 Air-borne / Droplet
✅ Chickenpox (UPSC 2014)
• Agent: Varicella-zoster virus
• Vaccine: Varivax, ProQuad (MMRV)

✅ COVID-19
• Agent: SARS-CoV-2 (RNA)
• Transmission: Droplet, airborne, fomite
• Vaccines: Covaxin, Covishield, Sputnik-V, GEMCOVAC-OM (mRNA)

✅ Influenza
• Agent: Influenza virus
• Treatment: Oseltamivir, supportive care

✅ Measles
• Treatment: Supportive care, Vitamin A

✅ Mumps / Rubella
• Treatment: Supportive care

📍 Zoonotic
✅ Ebola
• Agent: Ebolavirus (RNA)
• Transmission: Zoonosis, body fluids
• Vaccines: Ervebo, Zabdeno + Mvabea

✅ Nipah
• Agent: Nipah virus (RNA)
• Transmission: Zoonosis, contaminated food
• Vaccine: ❌

✅ Rabies
• Transmission: Animal bites (dogs, bats)
• Prevention: Post-exposure prophylaxis

📍 Vector-borne (Other)
✅ Japanese Encephalitis
• Vector: Culex mosquitoes
• Vaccine: IXIARO (inactivated Vero cell)

📌 #GS3
#prelims
#science_technology
#science_and_technology

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🔆 Personality in News: Chakravarti Rajagopalachari (Rajaji)

📍 Why in News?
✅ The President unveiled a bust of C. Rajagopalachari at Rashtrapati Bhavan, replacing the statue of Edwin Lutyens as part of efforts to remove colonial-era symbols.
✅ Lutyens designed major landmarks of New Delhi — Rashtrapati Bhavan, India Gate, North & South Block (with Herbert Baker).

🔆 About Chakravarti Rajagopalachari (1878–1972)

📍 Early Life
✅ Born on 10 December 1878, Thorapalli, Tamil Nadu.
✅ Renowned patriot, lawyer, social reformer & administrator.
✅ Popularly known as Rajaji.

🔆 Key Contributions

📍 Freedom Struggle
✅ Participated in protests against the Rowlatt Act.
✅ Took part in Non-Cooperation, Vaikom Satyagraha, and Civil Disobedience Movement.
✅ Led the Vedaranyam Salt March (1930) in the south.

📍 Political & Constitutional Role
✅ Proposed the C.R. Formula to resolve Hindu–Muslim political deadlock before Partition.
✅ Member of the Constituent Assembly (from Madras).
✅ Served as:
• Governor of West Bengal (1947–48)
• Governor-General of India (1948–50) – Only Indian & last person to hold the post.

📍 Later Political Role
✅ Founder of the Swatantra Party (1959) — advocated free-market principles & limited government.

📍 Values & Legacy
✅ Humanism & Integrity
✅ Intellectual statesman with strong moral convictions.
✅ Awarded Bharat Ratna (1954) — among the first recipients.

📝 UPSC Prelims Focus
• Only Indian Governor-General of India
• Leader of Vedaranyam Salt March (1930)
• Founder of Swatantra Party

📝 UPSC Mains Angle (GS1 – Modern History / GS2 – Polity)
“Chakravarti Rajagopalachari combined moral philosophy with pragmatic politics. Examine his role in India’s freedom struggle and early constitutional development.”

#history #prelims #mains

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